The 27-year old Macedonian left-back, who is on a season-long loan from Dynamo Kiev, was tracked by the Baggies when he was with Heerenveen a few years back and says it would be nice to commit himself fully to the West Midlands club.
"I know that West Bromwich wanted me two or three years ago when I was playing in Holland," Popov, who has yet to make his Albion debut, told the Birmingham Post.
"When I heard they wanted me a second time I said 'this is a good chance for me to show what I can do' - I'm so happy to sign for West Bromwich.
"I hope after this one year I will sign for two or three more," added Popov.
"Dynamo usually finishes first or second in Ukraine and as I have a three-year contract there I know - if I go back - I'll be able to play Champions League football.
"But I will only have one chance to come to England and I want to use it because I always dreamed of it."