He’s a guy who can fill in the top 4 and do well but you don’t want him there permanently, he doesn’t have the consistency playing more minutes. If he gets more good luck to him but should be more in the 3 - 3.3 range.
He'd probably good value up until 3.5m, anything more and you're getting into risky territory. He's got the ability to be a top 4 defender but he lacks consistency. Ideally you want him anchoring your bottom pairing or possibly on your 2nd pairing if you have a good 3rd pairing.