Emery led PSG to a domestic treble in just his second campaign, having won two cup competitions the previous season.
He then resigned his post at Parc des Princes before taking over immediately at Arsenal, but Tonietto is not convinced by his talents.
“PSG lost two years on the day of his appointment,” Tonietto told L’Equipe. “His problem is that he has trouble dealing with the stars.
“In Paris, it was the players who solved the situation after Neymar and (Edinson) Cavani faced off on the pitch for a penalty.
“When he went to Arsenal the first player he got mad at was Mesut Ozil.
“He’s a good coach to play in the Europa League, not the Champions League. The costume was too big for him. He was a terrible coach for PSG.
“If there had been a coach of another caliber during these two years, PSG would have already won the Champions League. “
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In Emery’s two seasons at the helm of PSG, they only managed to reach the final 16 Champions League stages – a feat matched by his successor Thomas Tuchel in 2018/19 before the German won’t lead them to this year’s finals.
Looking back, Emery will arguably be less fond of his time with Arsenal who sacked him just months after entering his sophomore year after a period of dismal results.
Tonietto isn’t the only one criticizing Emery, with PSG midfielder Marco Verratti having had a few negative words to say about his former boss last year.
Do you agree with Tonietto’s opinion on Unai Emery? Give your opinion below.
“Each manager has a different way of doing things with his players, of making them understand things,” said Verratti. “Sometimes with Emery things were pretty tough.
” I think yes [there was a difference in personalities]. Tuchel doesn’t play, but comes to a workout with a closed face, it doesn’t work.
“We found our smile again, we lost it a bit. ”
Emery, 48, is already back in management after his disappointing stint in north London, having taken over the reins of Villarreal this summer.
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