England coach Roy Hodgson fears the captaincy could affect the form of Manchester United striker Wayne Rooney.
Hodgson is concerned the burden could be too much for Rooney to handle.
He said: "At the moment I think he's coping with it well but we'll have to keep an eye on the situation, as will Louis, to make sure it doesn't weigh him down.
"I remember making the point fairly recently that he's really taken on this job as captain with enormous seriousness.
"He's studied and talked a lot with Steven Gerrard. He spends a lot of time with the younger players. And obviously with me he's very good. If there's anything he thinks I should be made aware of, he makes me aware of it."
