People talk as if Barcelona gave him a low release clause for fun, they'll have given it to him as part of a negotiation designed to hang onto a top prospect.
Even at 20 he was well known to the scouts, and he's by all accounts intelligent enough to look at Xavi, Iniesta, Busquets, Macherano, Fabregas and even players like Sanchez and know that however the formation was arranged he was going to be a long way down the pecking order. I would guess the only way he was signing a contract was if he knew that he had a reasonable escape route.
Guardiola may have offered him a lot of reassurance, but we all know verbal contracts aren't worth the paper they aren't written on. So he (and his agents) did the practical thing.
A year later and nothing had changed except they threw Song into the rotation.
Patience is great but he's not a kid, he's been capped for Spain, he's played over 100 games for Barca. The surprise isn't that he's willing to use the clause, it's that he seemingly hesitated about doing it. Nothing stupid about Barcelona agreeing a contract clause to keep a player who might have left two years ago if they hadn't.
You make far too much sense for this thread.