The Liverpool manager has faced criticism following a poor campaign in 2014/15.
After coming agonisingly close to the Premier League title two years ago, Liverpool could only manage a sixth place finish last season, recording 49 fewer goals and 22 fewer points than the previous year.
The Reds struggled following the sale of Luis Suarez last summer and the blame was laid at Rodgers' door regarding the various transfer failings.
He said: “...he can only rely on the people he’s got working for him, his scouts and others at the club.”
Redknapp feels the scouting process has changed over the years, adding: “The time when a manager would go see a player three/four times before doing the deal are gone.
"A lot of players are bought from abroad and he (Rodgers) cannot go see everyone.”
Redknapp also touched upon Liverpool’s Roberto Firmino signing, admitting he doesn’t ‘really know much’ about the player but feels he will play in a three up front as Rodgers aims to emulate the success enjoyed with the Suarez – Sturridge – Sterling triumvirate.
The former Spurs boss admitted next season is vital for Rodgers but still believes calls for his sacking were unjustified.
“It’s big season for him but I thought it was madness that people were suggesting he could lose his job. “
“He lost Suarez and Sturridge last season and that’s enough to affect any side.”
The pressure on Rodgers was always going to be intense next season but the huge £29 million (per the BBC) signing of Firmino might just add that little bit of extra scrutiny. Should Liverpool fail to hit the ground running, questions will start to be asked about why the board decided to back a man who failed to deliver so dramatically the previous year.