"Habib Beye and David Rozehnal have been doing unbelievably well for their first season.
"Yes, they've made one or two mistakes along the way, but we have to accept that while they're gaining Premier League experience.
"I've said right from the start I needed as much Premier League experience as I could get. We tried to buy it, but we couldn't get it.
"We ended up with these players who I know are quality, but need a little bit of time to come through. These two have come through really, really quickly."