Celtic's Toure holds his hands up as Hoops well beaten by impressive Germans
Celtic 0 B M'gladbach 2
Kolo Toure took the blame for Celtic's 2-0 defeat to Borussia Monchengladbach on a damaging night for the Hoops' Champions League hopes.
The veteran defender was guilty of giving away cheap possession before both goals from Lars Stindl and Andre Hahn, which sealed victory for the impressive German visitors.
"In that kind of competition you can't afford that kind of mistake. I have to blame myself," an honest Toure said after the defeat, which leaves Celtic bottom of Group C.
"It was a simple action to just put the ball to the side, but I like to play. (I was) over-confident for the first goal, and for the second goal the same thing.
"I don't like to make mistakes. The game is very fast and you have to concentrate for 90 minutes."
Skipper Scott Brown played down the significance of Toure's errors, saying: "Everyone makes mistakes. The gaffer wants us to play out from the back and that's the way it should be.
"We're always going to make mistakes - in the SPL we can get away with it but not tonight."
Boss Brendan Rodgers also refused to blame Toure, who has otherwise impressed since making the move to Celtic Park in the summer.
"He's a top professional, Kolo," said the Ulsterman.
"When you're asking players to play at times that happens. There's no blame attached to him there."
Celtic are now two points behind the Germans and Rodgers admitted his side had been well beaten.
"They're a very good side. They were just sharper than us," he said.
"I can't complain about my players, they gave everything. You don't want to gift anything and we probably gifted two goals away. The best team won."
The Scottish champions still have to play Barcelona at home and City away, as well as having to go to Germany for the reverse fixture of tonight's game.
A Nir Bitton free-kick in the 15th minute was pushed round the post by Gladbach keeper Yann Sommer for a corner but aside from that, the Bundesliga side looked in control.
Craig Gordon made a great save from Ibrahima Traore after the Gladbach wide man had been set up by Jonas Hofmann, the Parkhead keeper gathering the low drive at the second attempt.
The Scotland keeper made another good save in the 26th minute, this time from Hofmann's stinging drive after the visitors again exploited space behind left-back Kieran Tierney.
The home supporters grew increasingly agitated as Gordon tipped a drive from Hahn over the bar after another swift break.
But after all that, the Hoops should have gone into the interval with a goal.
Tom Rogic's defence-splitting pass found Scott Sinclair but with plenty of time and only Sommer to beat, he scooped his shot over.
Borussia defender Tobias Strobl came close with a curling shot early in the second half, but the opener was only moments away.
There looked little danger as Toure tried to shepherd a loose ball out of play. However, Hahn refused to give it up and hooked the ball back to Stindl who drilled through Gordon's legs from 10 yards.
Callum McGregor, Leigh Griffiths and Patrick Roberts came on for Bitton, Rogic and James Forrest as Rodgers tried another route back into the game.
But the points were heading back to Germany when Hahn burst through towards the Celtic penalty area chased by Toure, who had been dispossessed, and Mikael Lustig, before he knocked it high past Gordon to seal a good night's work.
CELTIC: Gordon, Lustig, Toure, Sviatchenko, Tierney, Bitton (McGregor 63), Brown, Forrest (Roberts 73), Rogic (Griffiths 71), Sinclair, Dembele Subs not used: De Vries, Izaguirre, Simunovic, Armstrong.
BORUSSIA MONCHENGLADBACH: Sommer, Vestergaard, Strobl, Kramer, Stindl, Traore (Schulz 86), Wendt, Hormann, Korb, Hahn (Herrman 90), Elvedi
Subs not used: Sippel, Hermann, Dahoud, Sow, Jantschke, Rutten
Man of the match: Andre Hahn
Match rating: 6/10
Referee: Tasos Sidiropoulos