What happened: Mike McCarthy has restored concepts Aaron Rodgers ran earlier in his career. Rodgers returned on a one-year deal with $22 million guaranteed.
Why it matters: Familiar terminology could shorten the offense's installation period. The one-year contract also makes this pairing a bridge to the next quarterback plan.
By the numbers: Rodgers and McCarthy worked together from 2006-18, reaching the postseason eight times.
What to watch: Preseason usage will show how much of their old system carries into the opener.