Neither Beck nor Kapanen has shown anything at the NHL level yet. It's far from certain that both, or either, will ever be regular NHL centers. Signing Evans gives the team time to find out what they have in those players. If both end up making it, Evans can always be traded in 2-3 years. Right now, there is plenty of room at center for Evans, as the team will have no experienced depth at center next season -- Suzuki is the only center under contract next season (assuming Dach and Newhook are more suited to playing wing).