Here's something from his contract that is. Per a source with knowledge of the terms of the Diggs deal, the Patriots have secured broad protection against a setback during Diggs's

PALM BEACH, Fla. — Patriots head coach Mike Vrabel wouldn’t give a timeline on wide receiver Stefon Diggs’ recovery from knee surgery, but he did say the newly signed pass catcher is “on schedule.” Diggs tore his ACL in October. He’s on track to return for Week 1, according to ESPN’s Adam Schefter.

Diggs wore the No. 1 jersey with the Houston Texans last year, but second-year wide receiver Ja'Lynn Polk currently wears that number with the Patriots. The veteran receiver recently told fans he had no intention of asking for Polk's jersey number in New England.