Seri is being tracked by United this season.
But former Leeds and France midfielder Olivier Dacourt has warned Seri that unless he is the No.1 choice, then moving to Old Trafford is unlikely to be his best option.
“He almost went to Barcelona, but he did not leave.," Dacourt told Bwin. "The problem with those quality players is that they are very good in major French clubs but now we are talking about big foreign clubs.
"Because of the competition in the big foreign clubs, it is necessary to see how they behave - personality is not enough.