When Mike McDaniel agreed to become offensive coordinator of the Chargers, one of his most important tasks was finding a way to get the best out of quarterback Justin Herbert. “He has the capability of mastering every tool in the toolbox,” the former Miami head coach said of his quarterback. “For him to own the position in a way he never has and ultimately for it to be obvious to everyone around, he’s playing the best football of his career.” It appears that in order to master every tool in the toolbox, the Chargers have decided to surround Herbert with more weapons than before. Announced early Monday morning, Los Angeles agreed to terms with former Pro Bowl tight end David Njoku on a one-year deal where he can make as much as $8-million. The Chargers signed former pro bowl TE David Njoku to a one-year deal worth up to $8 million. Getty Images Njoku has spent his entire nine-year career in Cleveland, where he had a breakout 2023 season.…