Hand in a transfer request
When a club wants to buy a player from another team they have to make a bid, i.e. offer some money and see whether the other club wishes to sell the player. If the club says no then the player will have to request to leave – he or she will have to offically tell the club that they wish to move to another club and this is what is known as a transfer request. This can be a risky move by the player as he or she can upset the fans who want their players to be loyal to the club. We use the verb to ‘hand in‘ but also use ‘submit‘ for this action – to submit a transfer request.
Example: ‘Virgil van Dijk submits transfer request in bid to leave Southampton’ (Guardian.co.uk, Monday 7th August 2017).