Ref Watch: Manchester United 1 Arsenal 1

Referee Andre Marriner made the correct decision not to award Manchester United a penalty following Nacho Monreal's challenge on Antonio Valencia.

That's the view of former Premier League referee Dermot Gallagher, who says Marriner made the right call during United's 1-1 draw with Arsenal on Saturday.

MATCH: Man Utd 1-1 Arsenal, Premier League, Saturday

INCIDENT: No penalty for Nacho Monreal's challenge on Antonio Valencia

SCENARIO: Valencia skips around Monreal and goes down in the penalty area, with the Arsenal defender's arm across his Manchester United opponent, but the referee does not award a spot-kick.

DERMOT'S VERDICT: Correct decision.

DERMOT SAYS: I don't think it is a penalty. Monreal runs a risk by putting his arm out but Valencia is already on the way down. So many people looked at this on Saturday, some said yes, some said no, that's how tough this decision is. When that is the case, you have to support the referee's call.

INCIDENT: Matteo Darmian avoids second yellow card after challenge on Carl Jenkinson

SCENARIO: Darmian had already been booked when he went in late on Jenkinson on the touchline. The referee gave a free-kick but did not issue a second yellow card.

DERMOT'S VERDICT: Wrong decision initially, but correct decision overall.

DERMOT SAYS: I think the referee makes his mistake by booking Darmian for the first challenge on Theo Walcott, I don't think it is a yellow card. Whether later he then thinks I've been too harsh, I don't know, but for me the second challenge (on Jenkinson) is a yellow card. In isolation it's a booking, but I think he may have thought, 'I'm going to have to send him off for two yellow cards and one wasn't'. When you look at them together, he's got the right outcome as Darmian stays on the pitch. Overall, he got it right.

Credit: Skysports.com