I can understand why.
Rockliff, Matt Crouch and Tom Mitchell are all very similar types of players. They get a tonne of inside ball, but unless they're getting the ball into the hands of someone who can damage the opposition they're not hugely effective on their own. They're the types of players who can rack up 30+ possession, but the team still gets thrashed.
I think Gibbs will add far more to our midfield.
I agree Gibbs is a far better fit for us (and a better player than Rockliff) but given Rocky was a FA, I thought we could've played Sloane more outside.
Anyway, we - and as footy4ever mentioned, plenty of other clubs - clearly have no time for Rocky.