Osman Sow's return to Hearts is hanging in the balance with Tynecastle officials now considering other potential signings to reinforce their attack.
The Swedish forward visited Tynecastle Park on Thursday to discuss a loan move from MK Dons but the deal hit difficulties after a medical examination.
Sow, 28, hoped his temporary transfer would be confirmed and Hearts are now preparing to make a decision on who should be their new striker.
Manager Craig Levein wants another forward in place before the summer transfer window closes at the end of the month having sold Kyle Lafferty to Rangers.
Sow was the intended replacement and the player is keen on a return to Edinburgh after an inconsistent spell in England.
After talks with the club in Gorgie, he must now wait to learn if there is any chance of Hearts proceeding with the deal.
Sow scored 23 goals in 52 games in maroon between 2014 and 2016. He left to join the Chinese club Henan Jianye for a fee of more than £1million, and then played for Emirates FC before moving to MK Dons 12 months ago.