The powerful Belgian, a £32.5 million signing from Aston Villa, has started each of Liverpool's first four games, scoring his first competitive goal in a 1-0 victory over Bournemouth.
Since then, however, the 24-year-old's performances have been generally uninspiring, epitomised by Liverpool's unprecedented 3-0 defeat at home to West Ham, during which Benteke failed to conjure a shot on target.
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His topsy-turvy start to life on Merseyside has predictably raised questions over his signing for Brendan Rodgers' side, with it being a simple case of the former Villain scoring the goals that he is capable of to justify his hefty price tag.
Despite this, Souness, a Liverpool legend, retains faith that Benteke will live up to the billing and prove to be an asset for a side chasing Champions League football.
"He has the potential to be an absolute star," he said.
"If he's fully fired up and motivated, he could take the Premier League by storm and be a superstar at Liverpool.
"But if you have a Benteke who picks and chooses when he plays, well then it might not be good enough. A lot of Liverpool's success this season will rely on Benteke.
Liverpool travel to Old Trafford this weekend in one of the biggest fixtures on the calendar - against long-time rivals Manchester United.
Both sides have endured indifferent starts to the new campaign having won their opening two games to nil, but have struggled ever since to find their goalscoring rhythm.
The importance placed upon the crunch match couldn't be bigger, then, especially given that both Rodgers and United manager Louis van Gaal have come under fire for their faltering tactics.
And with the imminent return of Daniel Sturridge on the horizon, this could well prove to be the biggest game of Benteke's albeit short career with Liverpool so far, with there no better place to announce your arrival than at the Theatre of Dreams.