Frank Lampard has full faith in Christian Pulisic becoming a key player for Chelsea this term, but insists the club and player must find a way to solve an ongoing hamstring issue.
The United States international missed the start of the season but was looking set for a run in the Chelsea side until he suffered a twinge in the warm-up before the October 31 match at Burnley.
A hamstring injury ended Pulisic's involvement in August's FA Cup final against Arsenal, after he scored the game's opening goal, and he continues to be troubled in that area and will be out for he trip to Newcastle United on Saturday.