Manchester United and Arsenal have been handed a huge boost in their respective pursuits of Ilkay Gundogan, with Borussia Dortmund CEO Hans-Joachim Watzke hinting that the midfielder may be sold.

The 23-year-old is widely thought of as one of the very best deep-lying playmakers in European football, and has been a key member of last season’s Champions League runners-ups’ squad for some time.

However, the German international’s future at the Westfalenstadion is far from clear, with a new contract yet to be agreed between himself and the club.

Dortmund are set to lose one big name player due to contractual issues at the end of the season, with star striker Robert Lewandowski set to make a Bosman move away from the club – possibly to join domestic rivals Bayern Munich.

Watzke says that he is desperate not to see another key man walk away for free, but that he doesn’t know what the outcome of Gundogan’s situation will be:

“It is our absolute desire that besides Robert Lewandowski no other regular player leaves the club,” he is quoted by the Daily Star.

“Only in the case of Ilkay Gundogan, we do not yet know how it will turn out. We would love to extend (a contract) with him.”

Real Madrid are also keen, but Arsenal and Manchester United are hopeful that he can be lured to England.