Asamoah Gyan believes Stephane Sessegnon and Sulley Muntari will prove to be shrewd signings for Sunderland.
The Black Cats were kept busy during the January transfer window, with the new arrivals offset by the sale of Darren Bent to Aston Villa.
Some of the £18million they recouped for the England striker was splashed out on Benin international Sessegnon, who was snapped up for £6million from Paris St Germain.
The 26-year-old has settled quickly at the Stadium of Light, with his creative ability proving to be a hit with his team-mates.
"He's a fantastic player. I know him from France and he was one of the best players in France," said former Rennes striker Gyan.
"He hasn't played for a while, but since he came here, he has done well in the Premier League.
"He's a ball juggler and if he is in top shape, he will help the team."
Sunderland boss Steve Bruce has also hailed Sessegnon's impressive start to life in England, with there the promise of more to come from the tricky playmaker despite the Black Cats being yet to pick up a win with him in their side.
Bruce said: "The kid is disappointed because he has come in and played really, really well in a couple of games and we haven't won a match yet.
"But you can see he has taken to it straight away. I think he will be a big crowd-pleaser - he's a good player, the kid, and hopefully there's a lot more to come from him."
Meanwhile, Gyan has also welcomed the January arrival of his international team-mate Muntari.
The Ghana winger has joined on loan until the end of the season from Inter Milan and is being tipped to make a lasting impression on Wearside.
Gyan said: "I have played with Sulley in a club side at Udinese and I know what he can do, and if he gets the ball, I know what he wants to do.
"It's a good move for him. I have seen Sulley play for a long time and it's a good thing for the team."