Much of the focus regarding the upcoming summer transfer window concerns high-profile stars such as the £60million-rated Paul Pogba, the world's most expensive player Gareth Bale and England starlet Raheem Sterling.

However, England's top-flight clubs may be able to grab themselves a bargain during the next few months as no fewer than 81 Premier League players will become free agents in the summer.

Didier Drogba, Shaun Wright-Phillips and James Milner are some of the biggest names still facing uncertain futures.

Didier Drogba's future remains unclear as his contract expires at the end of the season

England ace James Milner could be heading for the Etihad Stadium exit door if he fails to agree a new deal

Gunners midfielder Abou Diaby (left) arrived at Arsenal in 2006 but is yet to sign a new deal

Mathieu Flamini's second stint at Arsenal could come to an end as he is yet to put pen to paper on a new deal

Players including England international Glen Johnson and former team-mate Rio Ferdinand are yet to renew their current club contracts.

Chelsea hero Drogba has managed four goals in 27 league appearances for Jose Mourinho's side this year, and despite captain John Terry urging the club to offer him a new deal, he has been linked to a move away from Stamford Bridge.

Aston Villa defender Ron Vlaar, who has been linked with a move to Manchester United, could be set to leave the FA Cup finalists despite Tim Sherwood's eagerness to tie him down.

Sherwood is keen on landing a free agent of his own as Red Devils midfielder Tom Cleverley, who has been on loan at Villa since August, will end his affiliation with United in June.

Villa boss Sherwood recently joked: 'We’d like to keep him but he’s obviously got a few options – even more now. I’ll just tell him if he won’t sign he’s not playing in the cup final!'

Another Englishman who is likely to garner a considerable amount of interest is Burnley's Danny Ings.

Liverpool, Manchester United and David Moyes' Real Sociedad have been linked with a move for the striker and the Clarets' relegation to the Championship will only hurry Ings out of Turf Moor.

Liverpool and Manchester United are among the clubs interested in signing Danny Ings on a free transfer

Tom Cleverley (left) will leave Man United on a free transfer while Ron Vlaar (right) is yet to sign a new deal

Arsene Wenger has a big decision to make over two of his compatriots as both Abou Diaby and Mathieu Flamini are out of contract at the end of the campaign.

Diaby, who has again been crocked for the majority of the season, could be offered a pay-as-you-play deal while Flamini could move on to pastures new following his second stint in north London.

Manchester United could lose another youngster as James Wilson, who is highly thought of at Old Trafford, is yet to commit his long-term future to the club.

Chris Ramsey, if he is to remain in charge of QPR, faces the toughest decision of all the Premier League managers, having to decide the futures of nine current squad players - more than any other team in the league.

Manchester United starlet James Wilson (right) is yet to commit his long-term future to the Red Devils

Glen Johnson is likely to have a number of suitors if he does to decide to leave Liverpool on June 30

Meanwhile, Southampton manager Ronald Koeman can get to work on bringing in signings to bolster his squad - with no existing player contracts set to end on June 30, this year.

Long-time servants of the Premier League; Brad Friedel, Jussi Jaaskelainen, Thomas Sorensen and Steve Harper - who have a combined age of 161 - have spent the majority of the season on the bench and could be released come July.

Should the likes of QPR's Joey Barton and Richard Dunne not fancy another year back in the Championship, they could well be tempted to join the likes of newly-promoted teams Watford and Bournemouth, who'll both be seeking valuable Premier League experience.

Leicester boss Nigel Pearson will be hoping he can convince Esteban Cambiasso to stay at the King Power

Queens Park Rangers winger Shaun Wright-Phillips has made four Premier League appearances this season