Giggs said on the Webby and O'Neill YouTube channel: "They're two good players.
"The thing with Grealish is he's obviously used to the Premier League and doesn't need to adapt to it. For me, looking on the outside, he looks like he's got the mentality to come to this place and it not bother him.
"Certain players can get overawed but I don't think it would overawe him. The good thing this year is that he's scored 10 goals and got into double figures, which is the one question mark I would have had with him, does he score enough goals?
"To get to double figures with no penalties is impressive."
Giggs added: "Sancho is quick, direct but also an intelligent player.
"What I like about him is, when he gets into those areas for the final ball, he doesn't panic, which is what a lot of wide players sometimes do.
"He picks out the right pass and is someone who can counter-attack if we're going to play that but also, if a team sits back, he can beat players and make things happen.
"Two signings that may be available and, if they are and we're able to get them, then I would go and get them."