Player accidentally left the game, how to rejoin him?

[Todo]

Hi all!

We were playing Terra Mystica yesterday, as a part of our tournament and he had an urgent call and had to pause the game.
All ok, so we paused and this morning he closed the computer and apparently he accidentally left the game.

Is there no way to let him join again, no further turns has been happened so I think it should be easy just to revert his leave or how can this be achieved?

Thank you!