Yeah, it would make sense. I mean, At the time Diva arrived we only had Del Piero, Salas and Trezeguet, and he was a rash decision by Moggi IMO.
Now we have Mico as a sub for Del Piero (altho I wish it was the other way around), and it would be only logical to get a sub for Treze, considering how injurey prone he's been the last two seasons.