Tottenham Hotspur have reportedly joined West Ham United in the race to sign Basel defender Fabian Schar.
The Hammers are rumoured to have been tracking the 23-year-old for a number of months, and were believed to be planning a summer move.
However, The Mirror claims that Spurs are interested in battling their London rivals for his services.
The report suggests that the uncertainty over Sam Allardyce's future could force the Hammers to delay a potential move, and Spurs could be ready to capitalise as they look to improve their defensive options.
Schar's current deal is set to expire at the end of the season, but a one-year extension could still be triggered if clauses are met.