Arsenal boss Arsene Wenger believes Alexis Sanchez left for Manchester United chasing a big final payday.

Chilean international Sanchez will earn in excess of £400,000-a-week at United and Wenger has reiterated his opinion that the cash was the defining factor in the move.

"He is 29 years old, it is maybe his last contract. Financially it's important," Wenger said this morning.

"He could combine both. He's going to a great club."

But Wenger refused to criticise the forward's commitment, adding: "Sanchez is a great guy and has always been committed."

Despite losing Sanchez, Wenger says that Arsenal will not be known as a selling club.

"No, I'm not worried about that," he said. "When players get to a certain age and want to go you have to respect that."