One player on whom the Hoops made a tidy profit a few years ago is Victor Wanyama.
During his time at Parkhead, the Kenyan made 91 appearances for the Bhoys across all competitions, chipping in with 13 goals and nine assists along the way.
Wanyama also proved himself to be a tough defensive figure as well as an occasional threat in front of goal.
Specifically, in his seven Champions League appearances during Celtic’s 2012/13 season, the midfielder ended the tournament with a higher average for tackles per game (four) than any other Hoops player.
In addition, his overall European performances in that season earned him a solid rating of 7.13/10 from WhoScored, making him the second-highest rated player in Celtic’s squad at the time.
Back to the present, with the likes of Tom Rogic, Nir Bitton and Ismaila Soro having left Parkhead this summer, the remaining weeks of the current transfer window could give Ange Postecoglou the chance to bring in what may be Celtic’s next version of Wanyama.
Would Fausto Vera be a good signing for Celtic?
In 73 appearances for his current club Argentinos Juniors, the 22-year-old has found the net seven times and supplied three assists for his team-mates.
The midfielder, who has a reported price tag of €6.5m (£5.5m), has also made 23 youth appearances for his country on the international stage, scoring two goals in the process. This shows the attacking prowess that he has, in a similar fashion to Wanyama during his time in Glasgow.
From a defensive point of view, Vera has made 11 interceptions and won seven tackles in his seven league appearances so far this season.
This backs up why he has been hailed as a “complete” player by commentator Pablo Carrozza on Twitter, and why he could be an ideal next version of Wanyama at Celtic.