Robin van Persie. Picture: Getty Images.
Robin van Persie. Picture: Getty Images.

Arsenal manager Arsene Wenger admits losing striker Robin van Persie to Manchester United has dented his side's Premier League title ambitions before the season has even started.

Wenger leads his side into their opening Premier League game of the season against Sunderland at the Emirates Stadium just days after van Persie sealed his 22 million pound ($A33 million) transfer to Old Trafford.

The departure of the Holland international, Arsenal's captain and leading goalscorer last season, is clearly a significant loss for Wenger.

But the fact van Persie has joined one of Arsenal's main rivals for the English title has only added to the frustration of the Frenchman, who would have preferred to see his star forward move abroad.

"To strengthen an enemy is the other negative point of this loss," Wenger said.

"We wanted to avoid it but we couldn't. Honestly, I'd rather sell him abroad, to Paris Saint-Germain for example.

"Manchester United know him and know his qualities. He's really an exceptional player, believe me."

Van Persie's departure was inevitable after the player declared he would not extend his current contract, raising the possibility of him leaving as a free agent at the end of the forthcoming season.

But the move has left Wenger once again negotiating the opening weeks of a new season having lost one his star players over the summer months.

Last year Samir Nasri and then captain Cesc Fabregas moved on, although this time around the manager has at least been able to plan for the anticipated change.

Olivier Giroud and Lukas Podolski arrived at the start of the transfer window to strengthen Wenger's attacking options, while the move for Spain midfielder Santi Cazorla has been heralded as one of the most eye-catching transfers of the close season.

"Van Persie is a great player so it's always sad to lose such a player. But we must consider the economic reality and the will of the player," Wenger added.

"When you can't succeed in extending the contract of a player who is in their last year there is no other way but to let him go.

"It's sad because he played for us for eight years. He's 29 now. He was 21 when he came and it's another bitter pill to swallow.

"A lot has happened before and we survived it all, but this is a real challenge because van Persie scored 30 (Premier League) goals in a year, almost one per game. It's a tough challenge for our new forwards to replace him."

After seven years without a trophy and a succession of big-name departures, Arsenal may once again have to settle for a top-four finish rather than significant silverware.

The West Australian

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