Vieira led Persepolis to the IPL title on Saturday night in a tough challenge.
Osmar was named Persepolis coach as Yahya Golmohammadi’s replacement in January and headed the Reds to win the title.
Persepolis football club has previously announced its readiness to extend the coach’s deal, but he will reportedly leave Tehran in summer.
According to Iranian media, Osmar has been linked with several Emirati teams.