The difference between them is smaller because Monreal has regressed though, not because Gibbs has magically improved tenfold.
I'm not too fussed over which leftback we sell, but I think Monreal still has a lot more good performances in him across a season. There's also the risk that Wenger decides to just hand the position to Gibbs if Monreal goes, like he did last time, in which case we'll end up paying for it for the next two years.
