Manchester United's bid to keep Odion Ighalo has been thrown into doubt after Shanghai Shenhua demanded a permanent transfer for the Nigeria striker worth in excess of £20million.
Ighalo is on loan at Old Trafford until May 31 and United are hoping to extend it so he can finish the season in England.
However, Shanghai want their player back in time for the start of the Chinese Super League campaign, which is due to kick off in July, and will only allow him to stay at United if the two clubs can agree a permanent deal.