In other words, the 49ers and Collins both need each other. It's an added bonus that Collins' rookie contract will also help ...

Commanders second-round pick Trey Amos agrees to terms on a four-year, $7.3 million deal the day before rookies are required to report to training camp.

The 49ers had a hole at defensive tackle after releasing former prized free agent signee Javon Hargrave over the offseason.