Robbo said: "He has performed miracles with Valencia. I've known him since he was in charge of Real Madrid reserves. He went on to my old club Osasuna where Sammy Lee, who's now on the Liverpool coaching staff, was also a player.
"Sammy could be useful with his Scouse Spanish, although Rafa's English is good and he wouldn't have any problems making himself understood.
"You're speaking about a guy who lives, eats, sleeps and breathes football. He's not afraid of hard decisions."