Both clubs remain in discussions about the 23-year-old moving to the New York Stadium on a full-time basis.
Wootton, who joined Leeds on a three-year deal in August 2013 for an undisclosed fee from Manchester United, impressed during his time in South Yorkshire, which saw him make seven appearances.
Any deal for Wootton is likely to involve a fee, with the Red Devils still owed part of the fee agreed when Wootton moved to Leeds from Old Trafford.