New England Patriots quarterback Tom Brady is in negotiations with Under Armour over an endorsement contract, according to a report with CNBC. Sources said Brady's deal with Nike is up.

Brady wore Under Armour cleats in the Patriot's game versus Miami last Monday.

Under Armour's last two NFL signings were Baltimore Ravens wide receiver
Anquan Boldin and Dallas Cowboys wide receiver Miles Austin. Other NFL players under contracts with UA are the Baltimore Raven's Ray Lewis, New York Giants running
back Brandon Jacobs, Cincinnati Bengals linebacker Rey Maualuga and San
Francisco 49ers tight end Vernon Davis.