Mike Wells: Colts GM Ryan Grigson always has taken an aggressive approach in assembling a roster. That’s how he’s wired. The Trent Richardson trade, the free agent signings last offseason, using a first-round pick on a receiver so quarterback Andrew Luck would have another weapon to throw to. But you have to think last year’s failed offseason moves provided a lesson that humbled Grigson some. He gambled by signing some players over the age of 30 who were past their prime. Doing it that way blew up on Grigson because Andre Johnson, Trent Cole and Todd Herremans, all Week 1 starters, didn’t produce the way many thought they would. Herremans lost his starting job and was released late in the season. And as we all know, the Colts missed the playoffs. I don’t think Grigson will have the same philosophy this offseason, especially with owner Jim Irsay already saying they need get younger at some positions.