Celtic are facing a dilemma in the summer as Boyata runs down his contract and Filip Benkovic goes back to Leicester at the end of his loan spell.
Brendan Rodgers will lose his two first-choice central defenders and will need to replace them in the transfer market.
But who could they go for? We take a look at five central defenders who Celtic could potentially sign ahead of the 2019/20 season…
Tosin Adarabioyo
Struggled for game time of late at West Brom, on loan from Manchester City, and could fancy a season of regular minutes at a good level with Celtic.
Richard Keogh
The veteran Derby defender could add some experience to Celtic’s back line.
Scott McKenna
The Aberdeen defender has been linked to Celtic in the past, which makes him a candidate if they need a defender in the summer.
John Souttar
The Hearts central defender is another who could be an ideal signing for Celtic. Strong in the air and in the tackle, he has bags of Scottish Premiership experience despite only being 22.
Scott McTominay
A midfielder by trade, but McTominay has played as a central defender for Manchester United in the Premier League. Celtic could bring him in on loan and look to convert him into a defender.