The former Liverpool striker has been pleased with the summer business at Anfield as players begin to find their feet.
Sterling was sold for £49 million to Manchester City in the summer while Liverpool strengthened significantly, with seven new faces coming with in excess of £75 million spent on new players.
In his Liverpool Echo column, Aldridge said: "With James Milner, Christian Benteke, Nathaniel Clyne and Joe Gomez all fitting in with a minimum of fuss, this summer's signings are already making a positive difference, and in Gomez we've found a potential future star.
"It's a complete contrast to last season, when the new arrivals never really convinced.
"The money brought in from the sale of Raheem Sterling has been used wisely."
Roberto Firmino made his full debut at the Emirates Stadium and created a couple of chances, and it looks as though he could click nicely with Christian Benteke and Philippe Coutinho.
So far James Milner has become a commanding presence in the middle of the park for the Reds while Nathaniel Clyne and Joe Gomez have slotted in nicely to a defence that has yet to be breached so far this season as Brendan Rodgers has been trying to solve a problem that has dogged his side over the past couple of seasons.
It is early days and it is only over the course of the season that the signings brought into the club will be judged but the early signs have been encouraging while some are still finding their feet at the club.
When the games come thick and fast after the international break and other players get to make an impression on the side, some of them the newer signings, it will be interesting just to see the kind of effect they can have on games as well.