Welbeck made it three goals in a week, having also scored for England at Wembley against Scotland.
"It was nice for Danny to get his goals. He scored for England in midweek as well and hopefully that continues as he is a big player," Carrick said.
"The second goal just shows his belief and confidence. It's only going to help him, playing like that. He's a real threat and hopefully the front boys keep going."
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