You think I say this because of that 45 min? Ofcourse not. We cant say much until his 2nd season anyway.
I say that because he has never shown anything of world class in his short career so far, he's been a reliable and good defender for Sweden and Benfica. But even in that, Bailly proved a lot at Villareal already, one of the better defenders in the La Liga at the time.
Lindelof is a good player but not really necessary imo, our defence is our best position and have our best performing players. With Bailly, Rojo, Smalling, Jones, Blind, Tuanzebe we have plenty options. Lindelof is of that same level basically and not a proven world class defender who'd lift that line imo. He may develop into that though.