Usually when we see rookies come into the NFL, it takes time for them to get acclimated with their teammates. That hasn't seemed to be the case with Christian McCaffrey and Gre​g Olsen.

The two have already seem to be getting along just fine, especially on social media.

Last night Olsen posted a childhood picture of him that looked very similar to McCaffrey. 

McCaffrey obviously saw the resemblance and called some things into question. 

Is Greg Olsen Christian McCaffrey's long lost dad? 11 years separate the two so I doubt it, but their certainly is some resemblance in the photos. 

McCaffrey comes from a football family, just not the Olsen's. His dad, Ed, played in the NFL for 13 years and won three Super Bowls. 

McCaffrey may be just a rookie, but he's expected to be one of the major weapons on the Panthers' offense this season. He's already showing off the incredible talents that made him the No. 8 overall pick in this year's draft. 

Cam Newton is certainly going to have plenty of weapons at his disposal this season.