Mustafi looked very good last night, more like the Mustafi at the beginning of the

[Rich]

season. Mustafi/Kos/Holding could be a very good back 3.

Gabriel looks strong in the back three as well. Per will go in the summer and so we will have to bring in at least one new CB because we need 5/6 of them if we're going to consistently play three at the back.

That being said, Monreal/Chambers could do a job. In fact, I think it would suit Chambers quite well.