Redknapp admits LuaLua is keen to head abroad for a new challenge and is predicting the DR Congo forward to be a hit.
"Lua is a great player, but he wants to move on," Redknapp told The News. "He wants a change.
"He wants to play in a role behind the strikers and he wants to move abroad.
"I've no doubt he'll go away and be a great player for Olympiakos.
"He will get to play in the Champions League there for them. He's been a top Premier League player and he'll be a top player for them."