Ole Gunnar Solskjaer believes both of Manchester United's penalties should have been retaken in their 3-1 win at Norwich City.
Rashford and Martial both scored fine goals from open play following their profligacy from 12 yards yet Solskjaer felt VAR should have intervened again and penalised Krul because he was off his line.
"I thought the reaction to his miss was excellent," Solskjaer said of Rashford. "Ran back, chased, won the ball back, scored a great goal,but both penalties should have been retaken.
"He's off his line by a yard, the 'keeper, so even though I didn't think the first one should've been a penalty, they could have gone back and given him another chance.
"It's like the six-second rule with the goalkeeper in his hands, that was used for a couple of months and it's out of the window, and this as well on penalties, he's a yard off his line, we looked at it the first month and now it's gone.
"It's so simple and so easy [to check the 'keeper's positioning]. But he's seen it there as well, we can see it live he is off his line.
"He's actually one of the best in the world, Tim Krul, on penalties. Remember the World Cup in 2014? Was it [Louis] Van Gaal who took Cillessen off? He's clever in his mannerism as well, should've been booked probably, because he stayed away from the goal, but should have both been retaken."