Would stake something like... idk.... 50,000 beer tokens on Nemanja Matic NOT ever coming to Arsenal. Pretty much the antithesis of a Wenger player. Also swap deals never happen.
Wilshere to Sampdoria would be great for all parties if it happened. We get to sell a guy who is now little more than a financial liability unfortunately, Sampdoria get a technically brilliant player, Wilshere can play in a league that doesn't expect so much of him physically that he's just not capable of any more, everyone else gets the novelty value of a(n interesting) British player playing for a mid-table Italian outfit.