Barcelona have been linked with a summer move for Tottenham Hotspur right-back Kyle Walker to strengthen what has become a problem position.
Barça have struggled to replace Dani Alves since his departure for Juventus last June, with current first-choice Sergi Roberto failing to fully convince.
Spurs wouldn't let Walker go easily
The LaLiga champions have also seen fellow right-sided full-back Aleix Vidal ruled out long-term by a serious ankle injury suffered at Alavés two weeks ago.
And the Evening Standard says Barça are keen on England international Walker, but adds that Spurs chairman Daniel Levy wouldn't let him go without a fight.
Also interested in Sidibe and Gaspar?
The newspaper's report also indicates that Barcelona are tracking Djibril Sidibe of AS Monaco and Villarreal's Mario Gaspar.