I loved our 3 CB setup with him providing the sweeper role. Tosin was very good but sometimes when he was too high and forcing the opponent further up the pitch (something which surely was Pep's order), he lost track of the forward/winger and Otamendi had to slide in or tackle as a last man, which is one of his biggest assets.
We will be very open sometimes I think even against lesser PL sides and there will be more occasions like this, especially at the start of the season, so with Vinny out, I think Otamendi might play a very important role and will be a definite starter (as I can imagine Stones might play a similar role to what Tosin did). If he can maintain the level he reached against Dortmund or at the Copa, then great.
