Pogrebnyak joined The Cottagers from Stuttgart on a six-month loan deal on transfer deadline day, as Zamora was sold to London rivals QPR.
The Dutch coach is aware that his new forward represents a gamble, but is hoping that Pogrebnyak can recapture the form that saw him shoot to fame in his earlier career.
“He’s not had a great couple of years, but if he had we wouldn’t have got him,” Jol told Mirror Football.
I spoke to (Russia boss) Dick Advocaat and (predecessor) Guus Hiddink about him and they told me he’s got 45 caps and he’s had some great spells.
“It’s a very good opportunity for him and us, but he has to prove it now,” the trainer challenged.
Pogrebnyak is currently waiting for a work permit for England, and hopes to make his Premier League debut for the Craven Cottage side against Stoke on Saturday.
By Gareth McKnight