Shamrock Rovers manager Stephen Bradley hit out at NK Celje counterpart Albert Riera after their non-handshake following the Conference League encounter between their sides at Tallaght Stadium.
Celje avenged the aggregate defeat to Shamrock Rovers from last season's Europa League qualifiers as the sides met in the league phase of the Conference League, with a brace from Croatian striker Franko Kovacevic sealing a 2-0 win for the visitors on Thursday night.
But there had been tension between the two managers dating back to comments from last season, in which former Liverpool and Spain footballer Riera had opined that his own side were superior to the Hoops.
The frostiness carried over into Thursday night's game, including the aftermath when no handshakes were exchanged between Bradley and Riera.
"The man has no class whatsoever in any aspect. I think it's quite clear to see that with him," Bradley told RTÉ Sport at full-time.
"So yeah, there's no point in pretending to like each other. Last year, he showed us no respect and afterwards he was talking and saying they'd come here and beat us, 'blah, blah, blah'. We beat them.
"But how he's spoken sums him up really."
For his part, in the press conference, Riera put the non-handshake at full-time in the category of "what happens in Las Vegas stays in Las Vegas".
But he added: "(Bradley) can judge me as a manager. He's more experienced than me, he has more years as head coach than me. He can judge me probably on this.
"We didn't even have one coffee and anyway I will not give him the chance to have a coffee with me because after one year, still didn't apologise and this I will not accept.
"How you respect me, I will respect you."
Riera then made reference to the fact that Bradley has remained in charge for nine years at Shamrock Rovers without moving abroad, saying, "Even winning here in this country, and you stay in this country still. And not coming anyone from abroad, I think this means something."
When those comments were put to Bradley, he pointed that his personal situation related to the health of his son Josh had taken precedence over any aspects of his career.
"If (Riera) did his homework, he would see my personal situation the last few years and what my priority was the last few years, so he obviously hasn't done his homework and he hasn't spoken to people around football or over this side of the world," he said.
"And that's fine, that's his ignorance and that sums him up. That's the lack of class the man has."
Despite his issues with his opposite number, Bradley had no qualms about which side deserved to win the on-field battle.
The 2-0 defeat means the Hoops have yet to pick up a point after two match weeks in this season's UEFA Conference League proper, with their Slovenian opponents winning via a well-taken brace from Croatian striker Franko Kovacevic.
Bradley said Celje deserved all three points, with the Shamrock Rovers manager particularly irritated by the concession of a second goal from a set-piece, a facet which he felt carried over from their 4-1 defeat at Sparta Prague three weeks ago.
"I don't think overall we can argue with losing the game," he said.
"First half, Celje were very good, we were poor and they were good second half, we were excellent and on another night we score a goal or two.
"But we gave away the second goal. It was really sloppy from our point of view and when you're 2-0 down against a team like that, it's difficult."
Shamrock Rovers had beaten Celje 3-2 on aggregate in last season's Europa League qualifiers but more than a year on, Bradley felt the Slovenians had moved up another level in the space of 14 months.
"They've only one player, the international, the captain (Zan Karnicnik) who's there since we played them, who starts for them," he said.
"You can see they've overhauled, they've invested heavily and that's fine. That's football, they're allowed to do what they want.
"It still doesn't change how we pressed and the second goal we gave away."
Before the Hoops visit AEK Athens in two weeks, they will make another attempt to secure the SSE Airtricity Men's Premier Division title with one point needed to get over the line.
Second-placed Derry City will be aiming to follow in the footsteps of Shelbourne and St Patrick's Athletic who have kept Shamrock Rovers' champagne on ice.
"Just go up there and play the game," said Bradley of the mindset for Sunday's trip to the Ryan McBride Brandywell Stadium - the manager will be tackling the Irish Life Dublin Marathon for charity just before making the journey to Derry.
"That's what we do. Relax, and let everyone else, yourselves, the media, everyone else can make a big thing of it. But we go there to play the game, try and win the game and that's what we'd love to do."
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