As far as I know, he could play either on the left wing and as a center (left?) midfielder. Loko fans will correct me if I wrong, but I often saw him there in the middle. So i guess he could play wide)
Yellow and Red cards are not common for him (he gets his first yellow of the season in 13-th match or smth near). But I guess it's not really a good statistic. By the way, in Russian Premiership yellow cards comes more often then in EPL, so, as you can imagine, 3 cards a season indicates two things: he's not a harsh player, yes, but with that said his defensive ablilities are poor. So you need a good LB to cover him (if you play him on the wing).
He's a son of a Loko 2-nd coach, so he got a special treatment all the way, and never been in conflict with coaches or teammates (not sure what will happen in England though)...
I think he's a left-footed, and I doubt he can play right wing, but maybe a CM (as I said earlier).
And about the money... Well, no one will answer that at the moment... Russian players coming in EPL are changing due to different style of play. But it is a major boost to their morale, so, I guess, Bilya start will be good (and he's in form right now also), but will he carry it on the whole season - I don't know and can't even make a forecast.