Gonzalo is worth both the fee and salary, Arsenal's main issue has been having the resources it but spending it so fvcked uselessly on mediocre hacks, now they are getting an actual quality attacker, potential top scorer in the league, so defenitely should pay the big bucks. Wenger has too often gone with the lesser known "scouted" signings in some weird way to prove his keen sense for players, but he has lost that a long while ago considering the average level of most of the squad.