By ESPNSTAR.com staff
The battle between the Premier League top two did not end at the conclusion of the previous campaign. Instead, Manchester City and Manchester United fought all summer for van Persie's signature, after the Dutchman declared his intention to leave Arsenal.
Redknapp wrote in his column for the Daily Mail that the Red Devils had done well to seize van Persie, as the move would provide a strong backing for the team's title ambitions.
"Robin van Persie joining Manchester United is great for Sir Alex Ferguson and great for the title race," he stated.
"If he had signed for Manchester City it would have felt like game over before the season had even started. Instead, Sir Alex has made a statement that he wants his title back and he now has the strike force to make that possible."
Although several criticised United's move for the injury-prone 29-year old, Redknapp believes van Persie's performance last season proves he is well worth the price paid.
"After 37 goals in all competitions last season, his price tag seems cheap - he'd be worth £50m if he'd had more years left on his contract," he wrote.
"He was up there with Lionel Messi and Cristiano Ronaldo as the best forwards in the world last season."
The former midfielder also explained how the deadly combination of van Persie and Rooney could work for Ferguson's team.
"You imagine that Van Persie and Rooney will be the first-choice front pair, although you'd expect Rooney to drop deeper for big matches and a lot of European games, when Sir Alex prefers to play one striker," Redknapp noted.
"Rooney can then help out in midfield, sit on the opposition's defensive midfielder and provide goals for the Dutchman. A lot of Van Persie's goals last season came from central balls from Alex Song and Rooney might end up being the creator as much as the goalscorer. We may have to judge Rooney on more than just goals this season. When Ronaldo scored 42 goals in 2007-08, Rooney was a bit subdued, scoring only 18. He is more mature now so won't be overshadowed."
However, Redknapp warned that the arrival of the former Gunner could spell trouble for Javier Hernandez.
"Hernandez might have to become the new Solskjaer, making an impact off the bench," he noted.
"A year ago some people, incuding me, were talking about him as the signing of the decade but last season was so up and down for him. He's the best finisher of the four but his link play lets him down."
Manchester United begin their Premier League campaign with a visit to Everton on Monday.