Zaid Alsalami, Shaykh Dr Zaid Alsalami is an Iraqi born scholar, raised in Australia. He obtained a BA from Al-Mustafa University, Qom, and an MA from the Islamic College in London. He also obtained a PhD from... Answered 5 years ago
Bismihi ta'ala
Yes, it is permissible to pray behind a Sunni Imam, for the purpose of Islamic unity. Of course, details of this issue must be taken from the specific fatwa of your Marja' taqleed.
And Allah knows best.