The Welshman gave his surprise appraisal while in discussion with talkSPORT's 'Up Front With' series.
"He lost the young players and the old ones by changing things too quickly.
"What he did have was the right ideas.
"If Graeme Souness was manager of a team now, he'd be up there with the likes of Klopp, Guardiola and Mourinho because I think he knows he'd made mistakes.
“He'd be an absolutely incredible manager if he was managing now."