The goalkeeper limped off during Saturday’s 1-0 Barclays Premier League win over Stoke and scans have revealed damaged cartilage. Foster was expected to be included in the England squad for the Euro 2016 qualifier against Lithuania and friendly with Italy this month but will now miss out. “It’s rotten news for Ben because he’s been so consistent,” boss Tony Pulis told the club’s official site. “He kept seven clean sheets in 10 games but we have a very able man to step forward in Boaz (Myhill), who has performed well when he’s come into the team. “We’ve got the international break coming up which I hope will give our medical team the chance to work on Ben’s rehab and we will reassess later.” Myhill replaced Foster on Saturday and will deputise while 20-year-old rookie Jack Rose will provide back-up to the former Wales international. Foster could miss the majority of the Baggies’ final run-in – starting at Manchester City on Saturday – and they currently sit eight points above the bottom three. Press Association Ben Foster has been ruled out for at least a month with a knee injury, West Brom have announced.