If the Twins opt for an extended stay in St. Paul, people will be clamoring that Lewis needs to come up ASAP.
If the Twins rush him back to the bigs and he suffers a setback, people will be clamoring that he needed more time.
They're 5 games over .500. 2.5 game lead for the final WC spot. 6.5 games behind Cleveland in the Central. They've been without Lewis for almost 2 months. The sky's not falling. They're best served making sure he's fully healthy and ready to play. I'd much rather that approach than getting antsy in calling him up and risking not having him when they'll really need him, i.e., August, September, and hopefully October.