The West Ham legend was happy to see Zarate start in place of Victor Moses at the weekend.
On the day it was goals from Mauro Zarate and Andy Carroll that did the trick for Slaven Bilic's men.
Prior to the game the Croatian had to make a big selection decision. Victor Moses was ineligible to feature as Chelsea remain his parent club. Bilic therefore had to decide whether to replace like-for-like or go with a more defensive option. If anything, he went more attacking.
He drafted in the mercurial Argentine Zarate and it worked a treat. The maverick played a blinder and smashed in the opener. The decision to play the Argentine has certainly impressed one former West Ham striker.
Tony Cottee played for West Ham in two separate spells in his career, scoring nearly 150 goals in his time with the club and nowadays he works mainly as a TV pundit for Sky Sports.
"These are fantastic times to be a Hammer. What a result and what a performance by the boys on Saturday against the champions and credit to Slaven for really going for it.
"He could easily have played it safe and even a bit negatively against Chelsea and brought in an extra defensive midfielder to replace Victor Moses, but he went for Zarate and it paid off as he scored a superb goal."
Zarate has been one of the big indicators of the difference that Bilic has had on the West Ham squad. Under Sam Allardyce the maverick attacker was surplus, trouble and unappreciated. Under Bilic it is a completely different story and he is shining along with the rest of the first-team in this Indian Summer of a Premier League start.