Not sure where to ask, so I'll ask /v/ and /g/ I'm

File: uplay-01-535x535.jpg (131KB, 535x535px)

131KB, 535x535px

Not sure where to ask, so I'll ask /v/ and /g/

I'm at my friends house and we're looking to play Rainbow 6 Siege together. He bought his through Steam, I bought mine through Uplay. His computer doesnt currently have the game installed, and the internet where we are is pretty slow, so it would take an age. I have Siege installed on my computer through Uplay alone - my question is, can I transfer a backup copy of the folder of Siege to his computer, and then have Steam recognize it and run it?(Or since you have to go through Uplay anyway, have uplay run it?)

I found some tutorials of transferring games from uplay to uplay and steam to steam, but not from uplay standalone to a steam-based uplay version.