By Andrew Gould The Detroit Lions found a potential long-term building block when Michigan’s Aidan Hutchinson fell into their laps with the No. 2 pick. Head coach Dan Campbell hasn’t seen too much of the rookie edge rusher just yet, but he’s impressed thus far. When speaking to reporters Thursday, via Pro Football Talk’s Myles Simmons, Campbell said Hutchinson has “been all business” early in OTAs. “His approach is everything we thought it would be,” Campbell said. “He’s in the meeting rooms, he’s attentive, he’s wanting to learn, he’s taking it all in, he’s doing what’s asked of him. And then…