Former Indianapolis Colts' safety Julian Blackmon is one of NFL.com's best available free agents at this point in the offseason.

Up to this point, all offseason programming for NFL teams has been voluntary. Which means players could choose not to participate without any repercussions from the team.  That changed this week as most teams began their mandatory minicamp,

The Indianapolis Colts begin their three-day mandatory minicamp on Tuesday, which will be the final time they'll be in action until they report to training camp at Grand Park Sports Campus in Westfield, Ind. on July 22. There are plenty of storylines to follow, but specifically which players should we be keeping an eye on this week?

There is plenty to watch for, but here are seven big things to keep our eyes on during Indianapolis Colts' minicamp.

Former Falcons Starting Quarterback Trying Out For Colts At Minicamp originally appeared on Athlon Sports.