NFL director of officiating Dean Blandino said the hit by Denver Broncos WR Wes Welker on New England Patriots CB Aqib Talib is a legal play under current NFL rules.

Footballguys View: Zero surprise here. It was sour grapes by Bill Belichick to suggest anything different. The guy with concussion problems this year (Welker) is not going to be a headhunter.
NFL | Wes Welker hit on Aqib Talib a legal play