The bowler, who has struggled with a knee complaint over recent months, was speaking after his team had been defeated by the Netherlands at the T20 World Cup.
"I'm not sure [if I will carry on]. I have an eight-week rehab to get my knee right. Decisions will be made at the top. I've thoroughly enjoyed the role over the last couple of years but this is a game we should have won," he told Sky Sports News.
England won just one of their four Super Eight matches in Bangladesh.