With the opening of the transfer window being just around the corner, the transfer gossip is really hotting up.

Due to open on July 1, this window could see some serious business and if the latest rumours and reports are to be believed, we may just see some of the world’s biggest players on the move.

Last year saw several big name switches, including Paul Pogba and Zlatan Ibrahimovic to Manchester United, Gonzalo Higuain to Juventus, Mats Hummels to Bayern Munich, N’Golo Kante from Leicester City for Chelsea and the unexpected return of David Luiz to Stamford Bridge.

Premier League clubs spent a record £1bn on player transfers last summer and this year is set to be even bigger.

Liverpool are already close to capturing the signature of Mohamed Salah from Roma, whilst there is the news coming out of Spain that Cristiano Ronaldo might be looking for a way out of the Bernabeu.

Now, with one week to go until the transfer period begins, here are five world-class footballing superstars that may be looking for a new adventure next season…

Zlatan Ibrahimovic

One player Manchester United will be monitoring closely is Swedish superstar Zlatan Ibrahimovic.

Whilst the 35-year-old only left the club at the end of the season, he is targeting a quicker than expected recovery after a season-ending injury that he picked up in the UEFA Europa League.

Ibrahimovic is still training at the club and has now told staff at Old Trafford that he will be fit before the end of the year.

Should he be able to prove his fitness here, there is a definite possibility that United will offer him a short-term deal.

This would be excellent news for all those at the club as the striker had a great first year in the Premier League.

He scored 28 goals in 46 appearances, and picked up 10 assists on the way.  However, should the decision makers on the red side of Manchester choose not to take him on, the former PSG player will not be short of options with several clubs across Europe and the US keen to take him on.

Robert Lewandowski

Robert Lewandowski is a different type of striker to what we have become accustomed to in recent years and his specialist skill set combining athleticism, sublime finishing and free-kicks is certainly more easily comparable to the orthodox No.9.

He would be a classy addition to any top club and it is Manchester United who are most hopeful of capturing his signature, with Arsenal and Real Madrid also tracking his current situation.

Whilst the 28-year-old has just won the Bundesliga with Bayern Munich, scoring 30 goals in 33 appearances, his agent has confirmed that he is becoming frustrated with life in Germany.

Under the new set-up of boss Carlo Ancelotti, who replaced Pep Guardiola as manager last summer, Lewandowski is concerned with the level of support that he is receiving.

Whilst the Poland international would have previously been regarded as an unrealistic target for any club, the forward may have just crept up the wishlist of a few clubs worldwide.

Pierre-Emerick Aubameyang

The Gabon international is an integral part of Borussia Dortmund’s thrilling attack and has become the most prolific non-German marksman in Dortmund’s history – even surpassing Robert Lewandowski’s tally for the club.

Despite Aubameyang scoring 40 goals in 46 games last season, Dortmund still suffered a tough campaign after finishing third – a massive 18 points behind rivals and title winners Bayern Munich.

Now, most likely as a result of this, Aubameyang could be on his way out after four seasons with the club.

The 28-year-old is perhaps the most sought after striker in Europe and was expected to join Paris Saint Germain last month in a £60m deal, but after the deal didn’t go through, a lot of clubs were put on high alert.

Arsenal, Liverpool and Manchester City seem to be leading the way, but the striker will certainly not come cheap, with it even being possibly that the forward could now cost in excess of £60m.

Whilst he could be reunited with Jurgen Klopp at Anfield, the Emirates or the Etihad may be a more likely destination at this stage.

Alexis Sanchez

Contract rebel Alexis Sanchez is currently on international duty with Chile and has told Arsenal that he won’t make a decision on his future until after the Confederations Cup ends.

If Chile progress to the semi-final or final of this competition, he may not finish until July 2 – the day before Arsenal’s pre-season training is due to begin.

This isn’t the most ideal scenario for manager Arsene Wenger, but it now seems likely that it will be mid-July at the earliest before the player articulates where his future lies.

The 28-year-old has 12 months left to run on his current deal, but it will be the fifth-placed finish and a lack of UEFA Champions League football that could persuade him to end his time in North London.

He has an offer worth £300,000-a week on the table at the Emirates, which is a significant increase on his current deal, but if he does choose to leave then Arsenal will demand at least £50m for the player.

Bayern Munich, Chelsea, Juventus, Manchester City and PSG are all keeping tabs on the situation.

Cristiano Ronaldo

Real Madrid’s Cristiano Ronaldo is arguably the best player in the world.

His trophy cabinet consists of a European Championship with Portugal, four Champions League trophies, three Premier League titles with Manchester United and two Spanish Championships with Real Madrid… not to mention an FA Cup, two English League Cups, two Spanish Cups and four FIFA Ballon d’Ors!

Now, after eight years at Spanish giants Real Madrid following an £80m switch from Sir Alex Ferguson’s United, the Portuguese international is considering a move away from the Bernabeu.

The 32-year-old became upset with Real because of their perceived inability to back him amid allegations of tax fraud, which has obviously sparked a wealth of interest.

Bayern Munich, Chelsea and PSG have all been reported to be interest in the forward, but the links with a return to Old Trafford have certainly been the strongest.

Those in Manchester are slightly cautious about rushing into a deal, but it is said to be Ronaldo’s preferred destination and it really would be a remarkable return if the move was to be completed.