However, Terry is not worried about being sidelined for the tournament and expects to be back in action for Chelsea within the next six weeks.
Confident
"The operation went well and I'm feeling really good," Terry told The Sun.
"The surgeon has shaved off a bit of bone in my right knee that was rubbing and causing a lot of swelling.
"We're all confident the operation has solved the problem and it is looking good for a quick return.
"The medical staff say four to six weeks before I can play again. But, hopefully, it might be sooner.
"I'll definitely be back before the end of the season to help the team in the Premier League run-in and for the Euros."
(一个慢牛)