For the amount we have signed him for i don't think he is just going to be back-up, Carra and Agger could have some competition here. But if he is coming in then i think this will spell the end of Sami's career with us. With Skrtel and Agger being so young, they could be here for the long-term, Carra obviously isn't going to make way for him either. And with Hobbs next season pushing for a first team spot, next season could be Sami's last.
On the player himself i have never heard of him but apparently Valencia wanted him aswell, and we have been tracking him for 3 years. Looks like a bit of a slovakian nutter to me though, hopefully he will get stuck in, in the last few seasons i think our disiplinary record has been so good it's bad, you need players who are willing to get stuck in, obviously you don't want your players getting booked every game, but we are to nice at times and that needs to change.