Sheffield United manager Chris Wilder has praised Frank Lampard for his stint at Derby County.

Wilder face Lampard once again this week, this time against Chelsea.

"We had some tremendous games with them," Wilder said. "They beat us at their place, when we went behind pretty quickly and then they changed a few things and we couldn't get out until later on. At our place, we beat them and that was a proper match where nothing was asked and nothing was given.

"Frank changed the way Derby went about things after going in there.

"He brought in young players and ditched their counter-attacking style to something more proactive. Mason was a great player for them and, if he'd not been lost at a key time, who is to say they wouldn't also have pushed for the top two."