The Red Devils finished in second place in the Premier League table last term, but the Red Devils ended up 19 points adrift of champions Manchester City.
Mourinho was linked with a number of top players in the summer transfer window as he looked to improve his squad ahead of a potential title tilt in the 2018-19 Premier League season.
However, Shakhtar Donetsk midfielder Fred, FC Porto defender Diogo Dalot and veteran England goalkeeper Lee Grant were the only arrivals in an underwhelming transfer window.
Manchester United made a faltering start to the new Premier League season following a 3-2 loss to Brighton and Hove Albion in their second top-flight fixture.
Mourinho’s side lost 3-1 to Tottenham Hotspur at Old Trafford at the end of August before a humiliating 3-1 loss at West Ham left the Portuguese head coach teetering on the brink.
However, the former Real Madrid manager remains in position at Manchester United following a dramatic 3-2 comeback win over Newcastle United on Saturday.
Former Manchester United defender Neville hasn’t been afraid to criticise the club’s chief executive Woodward, notably over their failure to support Mourinho in the transfer window.
Redknapp, on the other hand, rubbished the suggestion that Woodward was to blame for Manchester United’s sluggish start to the campaign.
“Some blame Ed Woodward for not backing Mourinho this summer but you can’t fault him for the performances,” Redknapp told the Daily Mail.
“The lack of energy is the sign the dressing room and manager are not in harmony.
“And why would you back a manager who splashed out more than £300million and alienates stars he signed such as Paul Pogba, Eric Bailly and Victor Lindelof?”
Goals from Juan Mata, Anthony Martial and Alexis Sanchez helped to secure a 3-2 win over Newcastle, having trailed the Magpies 2-0 at the break.
Mourinho’s side ended a four-game winless run thanks to Sanchez’s late winner at Old Trafford to ease some of the pressure on the Manchester United boss.
However, the Red Devils face a daunting clash against unbeaten Chelsea FC in their next Premier League fixture at Stamford Bridge on 20 October after the international break.
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