Athletic Bilbao are actively exploring the prospect of re-signing Ander Herrera from Manchester United.

Off contract in June, the Daily Mail says the current offer on the table has fallen short of what the 29-year-old had hoped for and he is preparing to consider his options in January.

Herrera has been a key figure for Jose Mourinho during his tenure as United manager, however that has changed in recent weeks and his frustration has been compounded by a niggling injury.

Fit again, he is hoping to stake a claim for a first team place after the international break and would like to stay at Old Trafford. Realistically, though, that may not be possible unless United revise their offer.

Athletic tried to sign Herrera in the summer and are prepared to make him the highest paid player at the club should he choose to join them in January.