The former midfielder does however admit he has lingering concerns over whether the central midfield position is strong enough.
There is naturally great anticipation surrounding the club after they have invested so heavily in improving the squad, with many hoping a top four challenge will be on the cards.
Hamann is one of those impressed by the business, thinking that former Aston Villa striker Benteke could be the missing piece of Brendan Rodgers’ jigsaw.
“I think the recruitment was a lot better this season than it was last season,” he told BreatheSport.
“They’ve bought proven players who have performed in the Premier League before. I think Benteke could be the final piece of the jigsaw. What a fantastic signing, I think he’ll do terrifically well.”
Concern over central midfield
While the former midfielder is enthused by the business done by his old club so far in this transfer window, he admits he has lingering doubts over those in central midfield.
The club have lost Steven Gerrard after he left to join LA Galaxy at the end of his contract, with the burden now falling on the likes of new captain Jordan Henderson as well as Milner and Phillipe Coutinho to be the creative forces in the side.
And Hamann admits he worries about that central midfield area when you compare it to rivals such as Arsenal and Chelsea.
“My worry is centre midfield. If you come up against the Chelsea midfield or the Arsenal midfield, which one do you fancy?” he added.
“I worry whether they are strong enough, physically strong enough, whether they are creative enough in the middle, whether they pass the ball well enough in the middle of the park. Apart from that, I think everything is there.”