Sky Sports sources understand that Tottenham's chances of signing Bolton's Gary Cahill are rated as 50-50.
The England defender is in the final year of his contract at the Reebok Stadium and has been linked with a move away from the club all summer.
Wanderers boss Owen Coyle admits he is willing to let the former Aston Villa player leave, but only for the right price, believed to be in the region of £12million.
Arsenal have long been linked with a move for the 25-year-old and had a bid rejected by Bolton last week.
However, the imminent arrival of Per Mertesacker at the Emirates has seen their interest cool, leaving north London rivals Tottenham in the clear to launch a bid for the defender.
Talks between the clubs are ongoing but with the deadline fast approaching it remains to be seen whether a deal can be done in time.