The midfielder has agreed to join the Reds on a free transfer from Manchester City, with his contract set to expire on July 1.
Manager Brendan Rodgers was thought to have fended off stiff competition from a number of sides to secure the England midfielder, who was likely lured to Anfield by the promise of regular first-team football.
And Heskey says the player is just what they need, highlighting the qualities that he will bring to the side.
“James Milner is a very good signing for Liverpool,” he wrote on Kicca.
“He’s just what Liverpool and Brendan Rodgers need at the moment. He will bring stability, experience and a winning mentality.”
A Steven Gerrard replacement?
It is expected that Milner will play a more central role for Liverpool than he did with Manchester City, where he was often consigned to a post as a right winger.
That came about as Manuel Pellegrini’s squad is awash with talent in the centre of the park, with the likes of Yaya Toure, Fernandinho and Fernando all preferred in the engine room.
Heskey, though, insists that during his stint at Aston Villa, Milner was the creative force and is always prepared to step forward for the team.
“I played with him at Aston Villa and he always proved an excellent professional and a solid performer,” he added.
“A lot of the good football we played went through James in the midfield. He’s the kind of player who is always prepared to step forward and shoulder the burden. He never shirks his responsibility to the team.”
Indeed, it is the responsibility and experience that Milner will bring to the Liverpool side that is the most important factor, especially given the loss of Steven Gerrard.
In a relatively young and inexperienced squad, that could prove vital as the Reds aim to return to the Champions League once again, although whether Milner is the driving force their midfield needs remains to be seen.