Yes, but most of the mid-table clubs will... most likely.
It's just the fact that 90% of people say "oh we paid 8mln for him" and later in a post they'd add how we had players in that deal too, as if it's not even important. They are a mid table and it's Matri, so I don't think we'll use some "bad or unknown" players in swap.
Like other players, he was at a very low level when we released him and he worked hard to improve an awful lot. For that reason I wouldn't call it a mistake, it's impossible to read players like that. It's like releasing Vittorio Ferrero or Andrea De Paola now and saying what a mistake it would be, I don't think people would be losing too much sleep over it.