But Walters said: “With hindsight, I shouldn't have left Rangers.
“I had literally 24 hours to make my mind up. I had the situation with the three-foreigner rule going on in my head. I didn't want the fact I'd be classed as a foreign player to be the reason for why I'd be left out for big games in Europe.
“Rangers offered me more money, more everything but with hindsight leaving was a stupid thing to do.
“At the time I thought it was right as I was getting the chance to carry on working with a fantastic manager in Graeme Souness.
“I was winning one or two trophies a year at Ibrox but after that I only got two more winners' medals for finals I never played in, so it is something I regret."