Defoe has rarely featured for England in recent months, but Sherwood is sure the 31-year-old can still make it into Roy Hodgson's 23-man party for Brazil.
"Jermain has been immense. He is one of the best strikers this league has ever seen," Sherwood said.
"His scoring record for club and country is second to none and long may that continue. I see him still having a future for England in the World Cup in the summer.
"I think he would (still get in the squad). That instinct of scoring goals is never going to leave Jermain Defoe. He needs to wait until his legs have gone and they're far from gone at the moment."
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