''(Former Bronco) Gorden Tallis told me that he'd never seen GI look in better shape than he does now,'' Daley told AAP.
"He played in the Four Nations for Australia and has come straight back into training and you can really see the difference, he looks great.''
Inglis struggled to find his form in the first half of last season and endured a nightmare against Jamal Idris in Souths' round two defeat by Canterbury.
Idris, who will line up alongside Inglis at Skilled Park on Saturday, ran all over the former Melbourne Storm star, but the centre was back to his best in the latter half of the season as Souths made a late push for the finals.
Daley believes, with Inglis fully fit and firing, Souths have the potential to cause a lot of damage.
"We saw last season when Inglis was at his best how dangerous they could be,'' he said.
"They beat the Dragons and towelled up Parramatta by 50-odd points.
"Everyone knows how much talent Greg has and you'd have to say Souths have a great chance of making the finals if he stays fully fit and available.''
Daley also has high hopes for Chris Sandow, who will make his representative debut alongside his former Rabbitohs team-mates Inglis and Nathan Merritt on Saturday.
Sandow linked up with Parramatta this year and Daley has no doubt he can carry his good form to the Eels.
"Chris is great to have around the place,'' Daley said.
"He's a lot of fun and keeps the place buzzing. Steve Kearney at Parramatta has been really pleased with how he's gone in pre-season.
"He's been impressed with his professionalism and also his fitness and how he's worked in training.
"Chrissy is blessed with so much talent and I see no reason why Parramatta cannot go well with him as their halfback.''
- AAP