Luis Suarez hit Ronald Koeman for lack of personality and also attacked former Barcelona president Josep Maria Bartomeu after winning La Liga with Atletico Madrid.
The 34-year-old striker was controversially allowed to leave Barça for local rival Atletico after six successful seasons at the Camp Nou.
Suarez responded by scoring 21 goals in 32 league games for Atletico, including two in their last two games in invaluable victories against Osasuna and Real Valladolid, reports DPA.
The Uruguay striker regularly discusses how injured he is from leaving Barça and looked at him from a new angle after showing his emotion as Atletico crossed the line to claim glory in the league.
“I will always be grateful to Barcelona and I will never go against Barcelona, they gave me everything and allowed me to reach the elite,” said Suarez.
“But obviously the president [Bartomeu] said everything in the press instead of calling me.
“Then the moment they wanted Leo [Messi] to stay, they called me to persuade me to talk to him [Antoine] Griezmann – then why didn’t they call me when they wanted me to leave?
“Koeman told me I wasn’t in his plans, then he said, ‘If we don’t find out by tomorrow, you’re back in my plans and I’m counting on you against Villarreal.’
“I saw then that the man had no personality. He wasn’t strong enough to tell me I wasn’t needed.
“No one [from Barca’s management has] he greeted me, but I almost sent them a picture! “
Suarez added that it would be “impossible” to leave Atletico before next season, after the club confirmed that it will stay for the second year of its contract if it wishes to do so.
Atletico boss Diego Simeone, meanwhile, discussed the circumstances surrounding Suarez’s signing, insisting he would not let it slip away.
“I was very happy from the first day I talked to him, I had already talked to him when he was in Liverpool, in an attempt for him to sign with us, but he chose Barcelona,” said Simeone.