Leeds United are reported to still owe Manchester United money for a player they signed back in the summer of 2013.
Wootton signed for Leeds from the Red Devils for around £1 million, but is currently deemed surplus to requirements.
The defender was recently sent on loan to Rotherham United where he played regularly, but is back at Leeds at present.
The Post add that talks are ongoing between the two clubs over a permanent transfer, using the financial situation as reason why Leeds won't be loaning him or releasing him as they did with Noel Hunt.
Wootton has one year left on his contract at Leeds beyond this season, but is well down the pecking order, considered fifth choice at best at centre-back by head coach Neil Redfearn.
It is unclear at present how much of the fee Leeds owe Manchester United for his services, and even if it is a small amount, the club may not profit from selling Wootton, save for lowering their wage bill.
The 23-year-old has made 27 appearances for Leeds in total, scoring once.