A 26, 27 or a 28 year old finally making his move to a big or rich team and then becoming one of the world's best in his position is a very rare thing. It happens sometimes (Camoranesi from Verona to Juve when he was soon to be a 26 year old is an example), but it's an 1 in 100 case. Usually there is a good reason, which has to do with lack of quality, why those 26-28 year olds never made it to a bigger club.
Unfortunately, we made many such transfers in the last 4 years, expecting the 26-28 bought from Empoli, Palermo, Catania, Udinese, Cagliari to be our starters and put our team back on the map among the world's best.
Almiron, Amauri, Iaquinta didn't do that and didn't make us a better team. Neither will Matri, Pepe and the guy from this thread, Martinez. Quag is the only one who might make it, but even he is a doubt.
I know that we aren't a team that has patience with younger players and we require immediate results. But I wish our directors thought about the realistic possibility that those guys from Empoli and Catania won't be the ones who'll bring results and instead of buying them for big money, they either invested in very talented younger players or bought 1 star instead of 3 twentysix-twentyeight year old guys from Empoli/Catania.