Kristoffer Ajer seems to have attracted the interest of Liverpool as Jurgen Klopp wants the Norwegian to bolster is defensive options since losing Dejan Lovren to Russian side Zenit.
The big Norwegian was the subject of multiple bids during the summer from Italian giants AC Milan but Lennon wanted to keep the defender as Simunovic departed.
The Reds only have three senior centre-backs at the club; Joe Gomez, Joel Matip and Virgil van Dijk and Klopp is now looking to add a fourth to the squad for the new season ahead.
Celtic should keep a hold of Ajer as Lennon is also short of defenders at the moment unless similar quality is brought in as a replacement.
Although Celtic are looking at Shane Duffy and a host of other players, Ajer should be kept as a Celtic player unless the offer was a ridiculous amount of which we know Lawwell would accept.