He's made 34 more FGs than Morten Anderson (599 to 565). He has the most points in NFL history. He also has 129 more total points than Mort (2,673 to 2,544, which is 110 points more than Gary Anderson who is 3rd at 2,434).
He's 69 XP away from catching George Blanda (that's more than a season's worth of work). And he has 599 total FGs, so he'd be the first to get to 600 if he makes one... kind of a milestone, but he's already the all-time leading point scorer and all-time FG made guy (which in my opinion are better than 'being the first to hit 600' -- he's already got 34 more than the next best guy in history and he did it in 2 less seasons).
According to Reich, he doesn't want to make a decision until Adam's fully healthy and evaluates what he wants to do. He'd obviously have to take a pay cut if he wanted to come back, even if just for a tryout.
If he wasn't fully healthy before last year started, I wouldn't be shocked if he could out compete Chase. Let's not forget, Chase went undrafted last year (not uncommon for a kicker) got cut by Buffalo. Got signed to Minnesota for 9 days and was cut from their practice squad. Went to LA for ~4 weeks and got cut (he went 6-9 for them with 3 misses inside 50 yards). Then went to San Fran for about 3 weeks and got cut by them. He missed a game winner in OT against SEA. When he came to Indy, he missed a 47 yarder which would have made that Bucs game 38-31 in the 4th quarter, instead we lost 38-35 (potentially cost us that game). He missed 5 FGs in 11 games, all within 50 yards. Sure the kid has potential, but there was a reason he was available to us late in the season, it's because he was missing FGs before he came here.
If Vinny wants to come back, I'd be all for seeing a fair battle between him, Chase and any other K we may acquire (potential UDFA). May the best (and healthiest) man win.