Robbie Keane's six month stint at Liverpool remains one of the great mysteries of the Premier League, with the Republic of Ireland record breaker failing to show his best at Anfield.
The striker joined the Reds for £19million in 2008, only to be sold back to Tottenham six months later after 28 appearances and seven goals.
At the time Rafa Benitez's side were Premier League title challengers, and Keane was seen as someone who could make the difference, reports the Liverpool Echo.
Now Keane has opened up about the real reason why his career on Merseyside never took off.
Speaking to Graham Hunter of Pundit Arena, he revealed that manager Benitez was at fault for wanting to experiment with the forward's positioning.
"He wanted to change me to a left winger. I am clearly not a left winger, and that is obviously clear for everyone to see."
"The first 20 minutes he wanted me to play left wing, and obviously I had never played it before, so it was new to me.
"When I did play up front I scored goals. But when I did play, I wasn't going to play the next day, which for a striker is very difficult."
"He tried to turn me into something I'm not, and that was always going to be a recipe for disaster as someone used to scoring goals."
Despite sticking the knife into the current Newcastle manager, the Irishman did have some kinder words to say about his former boss, marking him out as a true great.
"I respect every manager I've worked with," added Keane. "They all have their ideas, different ideas, and whether I agree with them it doesn't matter.
"I'm not a left-winger, as we've established from 20 years of playing football, but tactically he was probably one of the best I've worked with.
"He knows the game inside out."