In the midst of their City Series with the White Sox, the ​Cubs are eagerly awaiting the return of Jason Heyward. The 28-year-old outfielder was placed on the seven-day DL last week after suffering a concussion. 

Now eligible to return tomorrow, Heyward is going to need more time. He's not expected to come off the DL on Monday, according to reports. 

It didn't seem like a hard hit at the time, but Heyward's attempt to rob Dexter Fowler's game-winning home run has cost him and the Cubs more time than originally thought. 

Concussions are difficult to deal with, considering they're completely subjective depending on the person. What may be fine for one person may not be the same for Heyward. With head injuries an increasingly touchy subject in the world of sports, they're taken extremely serious. 

When Heyward returns, he'll look to improve off a slow start to the season. He's currently sporting a .227 average from the plate with two home runs and 14 RBIs on the season. 

As the Cubs have finally found their form through the early portion of the season, Heyward's return will be an added boost moving forward.