Kurt Warner expanding his role on NFL Network

Two-time MVP Kurt Warner is expanding his role on NFL Network.

The network says Monday that the retired quarterback has signed a contract extension to serve as a commentator exclusively for the cable channel.

Warner already appears on ''NFL Total Access,'' and he'll join the Thursday night game broadcasts on location and the Sunday morning pregame show as a studio analyst.

The former Arena League star also will call the ArenaBowl for a second straight year.