Manchester United have been placed on red alert after Arsenal captain Thomas Vermaelen raised further doubts over his long-term future in north London.
TalkSPORT reports how the Belgium international - who still has 18 months to run on his existing deal - has grown increasingly frustrated with life at the Emirates Stadium, having lost his place in the first-team.
Gunners boss Arsene Wenger has opted to pair Laurent Koscielny and Per Mertesacker at the heart of his defence this season, leaving the skipper to watch on from the sidelines for the majority of the 2013/14 campaign.
"I do occasionally have the chance to play," said Vermaelen in an interview with Het Nieuwsblad. "But you must remember that the players in front of me are incredibly fit and play almost all the time.
"Of course I was hoping for more playing time."
Vermaelen's lack of regular football could prompt a move away from Arsenal at the end of the season, and is understood to have prompted interest from Manchester United manager David Moyes.
With the Old Trafford chief on the lookout for a replacement for Nemanja Vidic, he could opt to move for the Gunners centre-back, should he push for a summer transfer.
"I do not know [whether I will sign a new contract]," added the 28-year-old. "We'll see at the end of the season.
"We are very much in the title race and have a chance of winning the FA Cup. My future is currently not on the agenda. These are worries for later."
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