The fact that "it wasn't called on the field" means nothing. Perhaps the referee didn't see it. So if a referee no-calls something because he didn't see it, does it mean he didn't think it was a foul and shouldn't get an opportunity to look at it again? The fact that the referee called nothing at all on this shows he didn't see it. What if getting the chance to look at it at the monitor actually IS now him making his call and sticking to it? And just because there is debate amongst former player pundits doesn't mean there is gray area. I haven't heard any former players who say a RC was wrong giving actual fact-based LOTG reasoning for why, while the former players who are saying it's a RC are using LOTG terminology of endangering the safety of an opponent, which gives them much more credibility that people saying "just seems harsh". And still waiting on someone who disagrees with the RC to give their opinion on what should have been called instead. Clearly it's more important about what some ex-professional player pundits think about challenges than the UEFA board though.