I stepped one pace over the line; the referee sent me off
The Persepolis team manager says the referee of the match against Foolad could not manage the game.

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The Persepolis team manager says the referee of the match against Foolad could not manage the game.

Young Journalists Club; Maryam Tayefeh - Mohsen Khalili, the Persepolis team manager, said after his team's 1-0 defeat against Foolad Khuzestan: We had the ball for much of the game, and we conceded from a situation we never expected. This happens in football — if you do not score, you may concede — and that is what happened to us. With respect to the referees who try to officiate well, today the referee could not manage the game. And when I protested, he gave me a red card. They said I had stepped one pace onto the pitch; if there is this much precision, good for them.
He continued: The entire technical staff, management and players are trying to show their best performance. Any player who does well in training is put on the pitch by the head coach. No player has a margin of safety and everything is analyzed. It does not matter when we concede; we must raise our concentration and be able to perform well. We will train and turn our weaknesses into strengths.
Source: Young Journalists Club