Another Inter substitution. Hugo Campagnaro comes on for Danilo D'Ambrosio.

Alan on Facebook: "With Celtic down to 10 men and Ambrose at centre-half, Inter will only have themselves to blame if they don't go through........ #"

Mateo Kovacic replaces Hernanes for Inter.

Third and final change for Celtic. Stuart Armstrong is replaced by Kris Commons.

Inter Milan midfielder Fredy Guarin is booked for taking out Stefan Johansen with an outstretched arm.

Tim Oliver: "The longer it goes goalless, the more likely I think it is that Celtic will snatch a winner. #bbcscotfootball"

Juan Icardi is a picture of frustration after heading well wide from the edge of the box. Inter are through as things stand but they want to make sure of it.

Celtic keeper Gordon is booked, seemingly for time wasting as he prepares to take a goal kick.

Craig Gordon has been force into some fine saves so far this evening.

Image source, SNS

Midway through the second half. The pressure is mounting on the Celtic goal. The final 20 minutes or so will demand a lot of the 10 men.

Chance for Inter as Rodrigo Palacio nods the ball across for Xherdan Shaqiri in front of goal but it is a bit too high for the Swiss, who heads wide.

Referee Ivan Kruzliak is uninterested after Xherdan Shaqiri goes down in the Celtic box under Emilio Izaguirre's challenge.

A break in play as Celtic midfielder Nir Bitton receives treatment after picking up a sore one while blocking a shot.

Hernanes's controlled chest and volley skims across the surface and past the right-hand post.

Celtic make another change with John Guidetti making way for James Forrest.

A lovely reverse pass by Fredy Guarin puts Juan Icardi one on one with Celtic goalkeeper Craig Gordon, who is quick off his line to make the block.

Tommy Boyle on Facebook: "Much rather Celts were playing WITH 10,as AGAINST 10, historically Celtic play well in these situations........fingers x'd!"

Danilo D'Ambrosio tests Celtic goalkeeper Craig Gordon with a curving shot from the left.

Alasdair Lamont
BBC Scotland at the San Siro

"A flare being set off in the Celtic end despite a 10,000 euro fine this week for the club from Uefa for the same thing and pleas from the club for supporters not to repeat it."

Ben Picard on Twitter: "Celtic are falling foul of the differences between Scottish and European referees #bbcscotfootball"

tom and 20 others on Twitter: "Palacio - a prima donna falling like a Madonna #bbcscotfootball"

Derek on Facebook: "Cmon 1-0 Celtic will do it !"

Dylan on Facebook: "come on you boys in green - get a goal!"