By ESPNSTAR.com staff
Van Persie, formerly the Arsenal captain, did not agree to a contract extension over the summer and made his availability publicly known.
After being courted by the likes of Juventus and Manchester City, the Dutchman eventually chose to sign for United in a deal reportedly worth £24 million. And it appears that he has been worth the sum as he has already scored four goals from four league appearances for the Red Devils.
Lehmann, however, felt that Arsenal had no choice but to sell the wantaway striker last month, telling the Sunday Mirror: "When you look at Robin van Persie - a player [who] wants to leave for money reasons and probably because he thinks that somewhere else it is easier to win, you have to let him go, particularly when he has only one year on his contract, and when he played the first season without an injury in eight or nine years, so that was an extraordinary season for Robin.
"And then to make a decision: do we keep him or do we let him go?
"So [only] the future will tell us, and what will come into place next year with the financial fair play rule.
"Then we will see how these rules actually come into place for clubs like Chelsea, Man City, who are spending beyond the budget and then it could turn out that clubs like Arsenal all of a sudden are far ahead of those clubs."
Van Persie is expected to feature for United in their away game against Liverpool on Sunday. Meanwhile, Arsenal travel to the Etihad to take on Manchester City in their league fixture.