Fabio Capello instructed the former Newcastle player to curb his drinking habits after a number of off-field incidents, which at one point saw him bailed by police on assault charges on condition that he lived with captain Kevin Nolan.
He was also among three players sent home from an England Under-19 squad in October 2007 for breaking a curfew but Hodgson was reassured by what his Anfield successor had to say.
"I spoke to Kenny (Dalglish) at some length about him because I don't know him particularly well as a person and one can easily be tricked by perceptions of players and what you hear or read about them," he said.
"Kenny was absolutely convinced about the player's ability and his personality and his seriousness as a professional and when I heard that, I had no further reservations.
"He is a different type of player to the others in the squad. He has that ability to hold the ball up, he has that aerial ability which is very useful, but he also has the ability to make runs behind defenders and use his strength and his power."