I always liked how bearded Mirko looked like he would rape your mother and sell you some stolen cigarettes shortly before doing something magical from 25 yards.
If both (hypothetically) left for the same price, and we were going to use the money on a class striker, it would make more sense to sell Mirko, as to sell Lichtsteiner we would need to invest part of the money in a new RB/RWB
i think after last season, mirko has proved to be more important than lich.. caseres is a good substitute for lich, while giovinco is too bad a substitute for mirko..