I like Cala - seems to be a bit of a free spirit. I'd have thought Cala would be Ole's type of player - and that could be a worry for some. Turner can be excellent defensively - big lad, body on the line, and all that sort of stuff - but he offers very little going forward in open play.
Now Cala is almost the opposite. He can defend well and some of his last ditch stuff was great last season, but he can go walkabout and lose concentration. A big plus for him (and I'd have thought Ole as well) is his willingness to get foward and take people on. His goal to beat Southampton was a well timed class strike that no other of our CBs can match.
Cala has all the enthusiasm we need and I'd like to see more of him. It will depend upon Ole's strategies for each game as they come. If he needs to contain, then Cala would be less likely to figure. On the other hand, if we need to break opponents down, then Cala could be a surprise package without too much disruption at the back.