An argument can be made that the Pittsburgh Steelers have the best offense in the NFL. The team is stacked on that side of the football with a two-time Super Bowl champion under center and arguably the two best players in the league at running back and wide receiver.

Although Pittsburgh has a high-powered offense, it hasn't come without a fair amount of controversy or internal struggles. Ben Roethlisberger hinted at retiring this offseason while Antonio Brown dealt with the backlash of his Facebook Live fiasco and now Le'Veon Bell doesn't have a contract in place that he is happy with at this point.

With Bell's discontent public knowledge, the veteran back is in no rush to get back to work during the NFL preseason. It appears Bell isn't expected to be with the team for the third week of preseason play, according to Jeremy Fowler of ESPN.

Le'Veon Bell is expected to stay away from the Pittsburgh Steelers for Week 3 of the preseason, a source tells ESPN.

Whether Bell and the Steelers are able to eventually see eye-to-eye on a new lucrative long-term deal remains to be seen. Both sides seem to have different plans on where to go from here on out meaning this could continue to be an ongoing struggle.

As for the upcoming regular season, the Steelers should be a force to be reckoned with once again as long as their three-headed monster of Roethlisberger, Brown, and Bell are able to still healthy.

The New England Patriots are widely considered to be the favorite to win it all for a second straight season, but Pittsburgh could pose a serious threat in the AFC.