Luke Shaw, 20, has suffered a double fracture in his right leg after Moreno's challenge in the 15th minute and will fly to Manchester for an Operation.
Hector Moreno told SBS6 : "I feel really sorry for him and I feel really bad because I know how it's like
"This happened to me as well during the World Cup
I want to wish him all the best, but it wasn't my intention to injure him
I'd rather it didn't happen."
The 27-year-old Mexican defender added: "It was nice to score a goal
I promised my family and my girlfriend that I would score and now this has happened."
Meanwhile Manchester United boss Louis van Gaal was unhappy that the referee took no action.
"It is awful
The boy who comes at 18 years old to Manchester, has a very difficult season and next season, his second season, he plays fantastic, then this happens." said the Dutchman.
“When he was going in the dressing room he was wearing the oxygen mask and was crying.
“You can judge for yourself
When I say it is a penalty and a red card then I am a bad loser
It was a very bad tackle I think, with two legs
"I'm not a doctor so I cannot say, but when you have a double fracture it is four to six months
But you can never say that in advance
"He won't play in the group stage, I don't think
I hope he will play again this season."
Manchester United are in third position in their Champions League group after their unexpected 2-1 defeat to PSV Eindhoven.
Source : DSG
Source: DSG