Express Sport understands that the Reds will agree to pay the Belgian's £32.5million release clause later this week.
And while Brendan Rodgers is keen to add more firepower to his squad, Barnes believes that Benteke would need to change in style to thrive at Anfield.
If he comes it will need a sweeping change in the way Liverpool play.
Christian Benteke
He told talkSPORT: "Liverpool will have to adapt the way they play to suit Christian Benteke.
"When they play with Raheem Sterling, and Philippe Coutinho, they pass the ball through midfield and always want to score the perfect goal.
"With Benteke, you get the ball wide and then in the box, you need to be a little bit more direct.
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Christian Benteke is a target for Liverpool
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"If he comes it will need a sweeping change in the way Liverpool play. Would that be a bad thing? Not necessarily, balance is important.
"At times Liverpool overplayed which really came off two years ago but didn't last season. He would cause people a lot of problems."