Zlatan Ibrahimovic conceded Paris St Germain threw away their chance to reach the Champions League semi-finals against Manchester City.
The runaway French champions were unable to turn their quarter-final tie back in their favour after surrendering a lead in the 2-2 first-leg draw, losing 1-0 at the Etihad Stadium on Tuesday.
City's Kevin De Bruyne scored the only goal of a nervy but open encounter in Manchester with 14 minutes left.
PSG, unused to being attacked by opponents in Ligue 1, had played with a back three for the first time this season in a bid to bolster their midfield and negate City's forwards.
But that plan did not work and striker Ibrahimovic, who endured a frustrating night in front of goal, felt the French side were caught out.
The Sweden international said: "In the first half we played with a new system and what happened, happened. If it had gone well, nobody would say anything, and now people will say we gave it away.
"The second half was better, when we reverted to our normal tactics, but we gave away two games.
"I think we are a better team, but we lost here and we drew 2-2 at home, so all the best to Manchester City."
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Paris Saint-Germain striker Zlatan Ibrahimovic says he will leave the club in the summer when his contract expires.
The charismatic Swede joked he would consider staying if the Eiffel Tower was swapped for a statue of himself after PSG had confirmed another French title with a 9-0 win at Troyes.
Ibrahimovic has been linked with a move to the Premier League but hasn't confirmed where he will be heading to.
I always had a good relationship with the fans. With the club, they always took care of me. I have always had good relationship with everyone. This is not in question. But, for now, I will not be at PSG next season. I have one and a half months left on my contract here. I will enjoy while I’m still here. What will happen next year I do not know but for now I will not be here.
I do not think they can change the Eiffel Tower by my statue, so...
Even the leaders of the club cannot, I think. But if they can, I’ll stay here, I promise.
Zlatan Ibrahimovic scored four goals as Paris St Germain wrapped up their fourth successive Ligue 1 title in stunning style with an 9-0 thrashing of sorry 10-man Troyes.
Edinson Cavani was first to net with little over 10 minutes played after the Uruguayan intercepted a shocking back pass before slotting beyond Matthieu Dreyer at the second attempt.
Javier Pastore was next to get in on the act, dribbling his way through a half-hearted Troyes defence, before Adrien Rabiot added PSG's third, prodding home after Cavani saw his initial effort well-saved by Dreyer.
The interval did little to stem Laurent Blanc's team's flow and, in a matter of seconds, Ibrahimovic grabbed a customary goal with a neat finish from the edge of the area following some good link-up play with Cavani.
And the big Sweden international had not finished there as he secured a first league hat-trick this season with less than an hour played.
Cavani saw a penalty saved but bundled home the rebound to make it 8-0 to the visitors . And there was still time for Ibrahimovic to add his fourth of the game, finishing with his left foot from inside the area to claim his 101st league goal for the newly-crowned champions.
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Team to play PSG: Courtois; Azpilicueta, Cahill, Ivanovic (c), Kenedy; Mikel, Fabregas; Pedro, Willian, Hazard; Diego Costa. #CHEPSG
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Zlatan Ibrahimovic has admitted he had the chance to re-join former club AC Milan this summer, but decided to stay in France with Paris Saint-Germain.
The Swedish striker confirmed the offer when speaking to the media ahead of his country's Euro 2016 qualifiers against Russia and Austria.
"It was concrete from their side and they showed great interest, but I said from the beginning that I am staying at PSG, I'm happy there," the 33-year-old told a news conference.