Steven Matz has thrived as a late-inning reliever for St. Louis, but opposing clubs eye him as a swingman option.

The St. Louis Cardinals could trade struggling third baseman Nolan Arenado and closer Ryan Helsley to the Toronto Blue Jays, offering a potential midseason shake-up ahead of the MLB trade deadline.

St. Louis Cardinals third baseman Nolan Arenado, center, talks with teammates on the bench on a night off from playing during a game between the Miami Marlins and St. Louis

What’s the mood of the clubhouse heading into the trade deadline? Cardinals relievers can sense the trade winds blowing.

M ajor League Baseball's trade deadline is scheduled for next Thursday, which means teams have less than a week to get their midsummer shopping done. The moves have already started, as the Mariners recently acquired Josh Naylor from the Diamondbacks while the Yankees acquired Ryan McMahon in a trade with the Rockies .

The St. Louis Cardinals are beginning to look more and more like trade deadline sellers as the cutoff approaches. The Cardinals have slowed down from their hot start, now sitting just two games above .

The St. Louis Cardinals trade deadline plans aren't shrouded in mystery. The Cardinals should sell, and not just because they are quickly falling out of the NL