In his column for the Liverpool Echo, Aldo wrote: "Heâ€™s been unlucky so far with that red card and injuries preventing him from putting together a run of games.
"But no more excuses. Liverpool are paying him top money and want a return on their investment.
"Cole is a quality player and you donâ€™t lose that ability.
"I feel a bit sorry for him because I donâ€™t think the left side of midfield is his best position. Iâ€™d love to see the manager play him behind Fernando Torres for three or four games.
"Just say to him â€˜show us what weâ€™ve been waiting forâ€™.
"Creative players like Cole and Fernando Torres can be match-winners. We need them to get their heads right and stay injury free.
"Come on Joe, we know you havenâ€™t become a bad player overnight.
"Letâ€™s have it now. Your club needs you."