Leicester City boss Craig Shakespeare felt the referee “guessed” Atletico Madrid’s penalty after his side’s 1-0 defeat on Wednesday.
Replays showed Marc Albrighton to have fouled Griezmann just outside the box, despite Jonas Eriksson signalling for a spot-kick, which the Frenchman scored to give Atleti a narrow advantage in their Champions League quarter-final tie against Leicester.
“It is a really disappointing decision by the referee," Shakespeare was quoted as saying by BBC Sport after the game.
“It's a key moment in the game. He has to get that one right, he can’t guess on those things.
“It’s a definite free-kick but it’s out of the box. It’s the key decisions you want correct.”
The Foxes’ former assistant added to UEFA’s official website: “Of course, we’re still alive. We want to stay in the competition but we know we have a big challenge ahead of us.
“It’s going to be very difficult but we have got very good results at home, the fans really enjoy Champions League nights, although we know we’ll have to create more chances then than we did tonight.
“We knew it would be really difficult because they are such a good team, they have a great work ethic and they move the ball around really well.
“We know that during a game there are many changes and we knew that Atletico were going to come out strong.
“We made changes at half-time to control Griezmann more as he was getting too much space between the lines. In terms of effort and hard work we were exceptional.
“Robert Huth’s suspension is a big blow for us, we knew we were walking a tightrope.
“We are hoping Wes Morgan will recover in time but it will be touch and go.”