That's it from Roazhon Park tonight. Things got a little heated in the last ten minutes or so, so the return game in Glasgow should be an interesting watch. Until the next time, it's farewell from us.
Plenty of huffing and puffing in that game, but not a huge number of clear chances. The two sides looked evenly matched with Rennes threatening on the counter and Celtic looking to build their attacks more steadily. An encouraging start to what looks set to be an engaging group in this year's Europa League.
It was a slow-starting game but a very competitive one in the end, and both sides will probably be satisfied with a point to start off the group stage.