Wales coach Ryan Giggs admits he's a fan of Manchester United youngster Mason Greenwood.
Greenwood struck in Sunday's 1-1 draw with Everton.
And United legend Giggs, while watching the game, said: "He looks a threat, every time he comes on.
"I think Ole (Gunnar Solskjaer) is handling him in the right way at the moment, bringing him on, impact player.
"It's just how long you can keep him like that, because also when he starts games he's scoring goals.
"We talk about (Anthony) Martial, he's not doing enough, he's not much of a goal threat, no chances in the box, so it won't be long before Mason Greenwood starts."