Oxford United manager Chris Wilder has admitted the final day of the transfer window was a stressful one.
Wilder received a substantial offer for top scorer James Constable from a League One side, believed to be struggling Bournemouth.
However, the two sides could not agree on a deal for the striker.
Wilder told BBC Radio Oxford: "I've got to say it was a very difficult day. It was a big bid for us and the player had a decision (to make)."
The boss added: "The player has to go and see what's available. It's a short career and you have to go and talk."
Constable has been the subject of intense speculation linking him with a move away from the club since the start of the transfer window.
The striker has previously stated his desire to stay at the club for the remainder of his contract despite interest from Luton and Swindon Town.