Tractor, top of the Iran Pro League, will count on their fans to push them the extra mile as they seek a healthy advantage from the first leg.

They will, however, need to be tight at the back after having to work harder than expected in their 5-4 aggregate win against Bahrain's Al Khaldiya SC in the Round of 16.

Al Taawoun had to work even harder to secure their spot, with their Round of 16 tie against Al Wakhrah SC of Qatar ending 4-4 on aggregate, with the Saudi Arabian side winning the shootout 4-3.

Al Taawoun will draw confidence from their unbeaten away record in the competition this season, having won three and drawn once.

Venue: Yadegar-E-Imam Stadium (Tabriz)

Kick-off: Tuesday, 19:30 (UTC3:30)