Packie Bonner has said that Celtic will need to invest heavily in their squad if they want to make an impact on Europe next season.
The Hoops ex-goalkeepers comments come in the wake of Celtics elimination from the Europa League, losing 1-0 to Valencia on Thursday evening and 3-0 on aggregate.
Celtic have a number of first-team players, such as Tim Weah and Oli Burke, on loan from other clubs, and are unlikely to keep them beyond the summer, leaving gaps in the squad for next season.
Bonner says the Scottish champions need to put more resources into filling those gaps if they want to improve on this season’s performance in Europe.
“This summer, Celtic have to get rid of players and they’ve got to sign players because there’s going to be positions that they have to strengthen,” Bonner told BBC Sportsground.
“It’s going to take a lot of work and it’s going to take money to do it.”