"Because the others deserved to be in it more than them. It's that simple," said Martin when asked why Obafemi and Ntcham were omitted from the squad.
"Whoever you are, you have to really earn the right to be in the squad. I love Olivier, he's one of the most talented players we have.
"We had a real chat about it. We were disappointed with his contribution on Wednesday. I wanted the young lads on the bench. It was the hardest call we had, who to leave off the bench.
"He'll be fine. He'll be a brilliant player for us and it's up to him to make sure he comes in on Monday with the right mentality. He's a top professional and he'll be desperate to get back in the squad.
"Michael, we had a chat after the deadline day madness and both decided it was best for him to have the weekend off and that he couldn't contribute in a way that he should have. I'm a young manager and have to learn a lot, I shouldn't have brought him on Wednesday with what was going on, I made the wrong call. But I feel like we made the right call today, and Michael agreed.
"He'll come back in on Monday, we'll have a really good chat and we'll make sure he's in the right frame of mind to contribute. His head has been filled with all sorts of nonsense since we first came back in, so his energy has been a bit different.
"We need to get back to the Michael Obafemi we had from December onwards and I'm sure we will."