Gerard Pique can reportedly leave Barcelona in the January transfer window if the Catalan outfit receive a bid of £30m for the centre-back.
The Spanish international re-joined Barcelona from Manchester United in 2008 and has enjoyed a trophy-laden career with his hometown club.
Pique has struggled for form this season, however, and according to AS, Barcelona will sanction a sale if their valuation of the player is met.
Chelsea and former club United are both said to be monitoring developments, with Pique understood to be keen on a return to the Premier League.