Gaine's firing came one day after Caserio, New England players, coaches and executives received their Super Bowl rings during a ceremony at the house of owner Robert Kraft.
The New England Patriots filed tampering charges Wednesday against the Houston Texans over their pursuit of general manager candidate Nick Caserio, sources told ESPN's Adam Schefter. The NFL will now investigate the matter.
Caserio has served as the Patriots Director of Player Personnel since 2008 and has been a sought-after general manager candidate around the National Football League for a number of years.
Caserio has been a member of the Patriots' staff since June of 2001, serving in a number of roles during his ascent to director of player personnel.
The NFL now is expected to gather relevant informant to open its investigation against Houston, per sources. He could have spoken with Caserio then, and that could be the impetus for the tampering charge.
Texans had reportedly placed a formal request to interview Caserio from the Patriots and had gotten no declination from Caserio's representatives.
The Texans also tried to interview Caserio a year ago before hiring Gaine, but the Patriots denied their request.
The Patriots filed tampering charges against the Jets back in 2015, after Woody Johnson openly discussed Darrelle Revis when he was still under contract with the Patriots.