Rashford struck twice during his senior debut for United in last Thursday’s 5-1 victory over FC Midtjylland in the Europa League, and he followed that up with another double in Sunday’s 3-2 win over Arsenal at Old Trafford.
Rashford was scouted during his time at Fletcher Moss Rangers - the same youth club Welbeck was at - and the Arsenal forward believes United have a player with “great potential”.
“He’s done brilliantly well. Individually I was really pleased for him, obviously to make a great debut like that in the Europa League and then into the weekend he did well,” Welbeck told the Daily Mirror.
“It was disappointing [for us] on the day. I was down when we lost that match. I’m pleased for Marcus but disappointed to lose that game.
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“My brother is very close with his family. He’s known his family for a very long time and Marcus was coming through the ranks at United when I was playing in the first team and I would see him all of the time.
“He’s someone that I always spoke to. He’s a great kid. He’s very level headed. He’s got great potential and I hope he does very well. I’ve spoken to him a couple of times.
“Fletcher Moss was where it started for me and a lot of other players as well. It’s vital that they get the stature back up again, get everything running smoothly again.
“There’s a lot of talent in Manchester that grows up in and around that club. Hopefully it can keep going for many more years.”