Sky Sports understands Bristol Rovers defender Michael Smith has handed in a transfer request, after the club rejected multiple bids from an unnamed League One side for his services.
Smith has attracted the interest of a host of clubs after an impressive season last term for Rovers, despite their relegation.
The Northern Irishman was named in the PFA's League Two Team of the Year last term and also scooped the club's player of the season prize following a stellar campaign.
The 25-year-old, who is entering the final year of his contract at the Memorial Stadium, feels he has no choice but to request a transfer as he is keen to move on and play at the highest level possible to boost his chances of breaking into the Northern Ireland squad.
"This is a decision I've wrestled with all summer. However, I feel I need to move on in order to progress my career and fulfil my ambition of playing international football," Smith told Sky Sports.
"I have spoken to both the manager and chairman, who understand my decision."