Redknapp wrote in The Sun: "I see Sam Allardyce has taken a bit of stick but I canâ€™t really understand why because staying in the Premier League this season was always the be-all and end-all. And heâ€™s doing a great job.
"Sam took over a Championship team, got them back into the top flight and staying up ainâ€™t easy.
"They can talk about the style of football played but over the years West Ham had become a yo-yo club and no Hammers fan wants that.
"If Sam keeps them up â€” and all the signs are he will â€” then I really donâ€™t know what more he could have done."