Celtic have been strongly linked with a variety of players in recent months with manager Ange Postecoglou seemingly keeping his options open in terms of signing targets this summer.
The Hoops boss is reportedly keen to strengthen his backline, with the addition of a left-back and possibly another centre-half his main priorities.
Another area that might require reinforcements is the goalkeeping position following the departure of Greek flop Vasilis Barkas on loan to Dutch club FC Utrecht last week.
It leaves the Parkhead side with only Joe Hart and Scott Bain as senior keepers, which could tempt Postecoglou into the transfer market.
Celtic are gearing up for the Champions League group stages next season and the Australian will be eager to bolster his first-team squad with added experience over the coming weeks.
So who have Celtic already been linked with so far this summer? GlasgowWorld takes a look at 15 players that are on the club’s radar.
9. Taylor Harwood-Bellis (Manchester City)
20yo - Centre-back is highly rated by the Premier League champions but they are keen to let him gain more first-team experience on loan after previous stints with Blackburn, Anderlecht and Stoke City. However, it appears his next destination could be recently relegated Burnley. | Getty Images
10. Mohanad Jeahze (Hammarby IF)
25yo - Left-back has been on the Hoops radar for a couple of months now. The Iraq international is set to leave his club in Sweden and held talks with Celtic but those negotiations haven’t progressed further. | Getty Images
11. Ryan Mmaee (Ferencvaros)
24yo - Striker contributed 30 goals in 37 appearances for the Hungarian champions last season. The Morocco international has been on Celtic’s wish list in recent months with extensive data analysis undertaken on him. Versatile and could play anywhere across the forward line. Photo: Alan Harvey - SNS Group
12. Ahmed Touba (RKC Waalwijk)
24yo - Left-back could provide defensive cover. However, Celtic are competing with a host of European clubs for his signature. Looks unlikely. | ANP/AFP via Getty Images