The former Real Madrid player has scored a number of crucial goals for Tottenham this season and continued in that vein with both goals as they beat Aston Villa 2-1 with just 10 men.
Redknapp said: “He can certainly score goals and his record is amazing. He did that in Germany. I think he scored 20 goals in a season and he’s capable of scoring 15-20 goals a year because he is such a fantastic player.”