Tierney to miss Scotland qualifiers
Celtic defender Kieran Tierney will have an operation on a double hernia which will almost certainly keep him out of Scotland's European Championship qualifying double-header in June.
There were fears the left-back would miss the rest of the season after being left out after Celtic's 3-0 Scottish Cup semi-final win over Aberdeen last month.
However, Tierney (21) is in contention for tomorrow's Scottish Premiership clash with the Dons at Pittodrie where a point will clinch an eighth successive title for the Parkhead side.
Tierney will go under the knife after Celtic play Hearts in the Scottish Cup final on May 25 with Scotland facing Cyprus at Hampden Park on June 8 before travelling to Belgium three days later.
"He has had advice from the specialist and we are just going to manage him through until the end of the season," said Hoops interim boss Lennon, who confirmed the club had triggered a 12-month extension clause on winger Scott Sinclair's contract. "I think it will be very difficult for him to go with Scotland.
"We have managed him on a daily basis and he will require surgery. The sooner the season finishes and he gets surgery the better it will be for him going forward. The timescale is probably three to four weeks.''
Lennon, who also revealed striker Leigh Griffiths is back training after being out since December with personal problems, believes the retention of Sinclair (30) is significant.
Sinclair, who signed from Aston Villa in 2016, has scored 17 goals this season.
Lennon said: "Scott will be here for another year. He has been a good player since he walked in the door.
"He has made a big contribution in the goals column and his football intelligence is important to have around. Scotty is always a threat."
Lennon is happy to see the return of Griffiths after a fitness assessment last week.
He added: "It went well. He is running on grass and doing a little more conditions work. He's making good progress."