INDIANAPOLIS -- The Indianapolis Colts went into free agency with the sixth-most salary cap space in the NFL at about $44 million.

That $44 million is down to about $12 million after a week of signings and re-signings for the Colts.

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As I wrote Thursday, the Colts still need a second starting safety, more bodies on the defensive line and depth at inside linebacker.

The Colts will pay attention to see who is available on the free-agent market, but they're likely done with the heavy lifting when it comes to signing players. General manager Ryan Grigson will continue his methodical approach when it comes to signing players. The Colts hope the players they draft next month can contribute in some way next season and then be able to take on a more prominent role once some of their older players are done playing.

As far as defensive tackle goes, it turns out that the Colts are optimistic about Zach Kerr, Montori Hughes and Kelcy Quarles at that position. So that's why they didn't pursue Terrance Knighton, who signed with Washington on Thursday. Former New England defensive tackle Vince Wilfork is still without a team and you have to believe Frank Gore and Andre Johnson will try to recruit him to Indianapolis.

It might be best to hold off passing judgment on the Colts' defense so far until after free agency and the draft is over.