We should be doing everything in our power to sign Can down to a long-term contract. Clearly he's more valuable to us if he ever does want to leave or a club comes in with a sizeable offer if he's under a long-term contract.
But moreso because he's a very good, and hugely promising young midfielder. They don't turn up out of nowhere, and when you do find them they're worth a fortune.
Leipzig qre quoting 50M for this Keita chap, who has done far less than Can. Pogba goes for 89M, and no one can tell me he's an infinitely better player than Can.