Boruc played through the pain in Milan on Tuesday

The Poland goalkeeper had waited until after Tuesday's vital Champions League qualifier against AC Milan before having the operation.

And the 27-year-old said: "I will probably have the operation in Britain at the end of the week - but certainly by the start of next week.

"I'll do everything in my power to be back for the Rangers game."

Celtic lost 1-0 in Milan but progressed to the last 16 of the Champions League after Benfica's victory over Shakhtar Donetsk left the Glasgow side second in their qualifying group.

It's always a target to play Rangers Artur Boruc

"I'm a little bit upset because I won't play the next few games, but I am happier that I can leave the team with us safely through to the next round," said Boruc.

"It's not just my knee that hurts - I pulled my groin against Hearts.

"Overall, though, the pain has not been too bad. I've had painkillers but not an injection.

"The specialist thinks that I will be out for about three weeks."

Boruc is determined to play in a vital game against Celtic's main rivals for the Scottish Premier League title.

"I don't think that's an unrealistic aim," he said. "It's certainly my target.