Gueye was one of the best defensive midfielders in the Premier League last season, but even his quality couldn’t keep Aston Villa up, although Koeman was among many who spotted his talent.
The 26 year old signed from Villa this morning for a fee believed to be around £7m.
He said, “Idrissa will provide quality in our squad in the midfield and we want to increase the quality in the team.
“He was one of the players last season with the best record in interceptions and pressing in the midfield.
“We need this kind of quality and I’m happy to have him joining our Club.”