Bale has been his club's most menacing attacker this season but he believes Holtby, who can play in a number of midfield roles, could become similarly influential.
"I'm sure he's going to fit in very well," Bale said today. "Hopefully, we can get him into the team quickly and get him doing well for us.
"He's looked very sharp and he seems the type of player who could play well in a team like ours.
"At 22, he's a younger than me, too, so there is a lot of potential there and let's hope he can fulfil that at Tottenham. He speaks fluent English, too, which helps, and it means he has settled in straight away with the rest of the squad."