He said: "Scott's late and he knows he is. I've no complaints, but he isn't a dirty player and we aren't a dirty team even though we keep getting red cards".
'We could have had another one. "That's not to say I want to experience it again". And in the semi-final we played well up to a certain point of the pitch but never had the quality to hurt Aberdeen.
"Tonight was a really good opportunity and a hard test for us - but one that I had confidence that we could pass. We want to get that right but at times we have got it wrong".
'I'm concerned about it, ' said the Rangers boss, who was already losing Morelos for Sunday's trip to Dens Park on a previous suspension.
"There is only so much I can do".
"We go to Ibrox as a team high on confidence as the level of performance we put in the other night at Hampden will win most games in the Premiership".
"I've been on at McKenna because he should be scoring more goals and what a finish it is to get it over Allan McGregor".
And he was dismayed by the way they played against a Dons team already weakened by a 34th-minute red card for Sam Cosgrove. It was a coming together. "I find it astonishing that he has been sent off for that".
"We scored a good goal and then didn't take the chance with the penalty and also had a good goal ruled out from Filip Benkovic", he said.
"In the second half our positioning was better but we were still too loose".
The Hoops trail Kilmarnock by a point, but have two games in hand, while Motherwell stay ninth.
"It's something we promote and it's great they have it". We didn't win the first ball, the second, the third and he scores from a very narrow angle.
"But we'll recover and look forward to playing at home as it feels like ages since we played at home".
Speaking to BBC Scotland after the game, Rodgers claimed it was the sweetest success of them all: "This is the most satisfying because it wasn't an easy start to the season for us".