London: Everton defender Leighton Baines faces a lengthy spell on the sidelines after injuring his ankle in training, the club's manager Roberto Martinez revealed on Saturday.

Baines suffered the problem on the eve of the new Premier League season and Martinez confirmed the England left-back would miss Saturday's opening-day clash with Watford and is unlikely to return for several weeks. The 30-year-old's knock is on the same ankle that needed surgery in May, a procedure which forced Baines to miss the final two matches of last season.