Jon Lester wants to sign that Cubs jersey Derrick Rose's son wore after Game 4

After the Bulls lost to LeBron James and the Cavs in Game 4 of the Eastern Conference Semifinals on Sunday, Derrick Rose took to the postgame podium with his son P.J. And when Papa Rose was asked whether he thought he could win Game 5 in Cleveland, P.J. made the mean muggin' face seen around the world:

When they ask your Dad if Chicago can possibly win in Cleveland.... pic.twitter.com/VdD49eq5GB

— Dave Zirin (@EdgeofSports) May 10, 2015

If you can pull yourself away from that face, you'll notice P.J. is sporting a Cubs jersey. Cubs ace Jon Lester noticed and asked if he could sign the threads:

@Rachel__Nichols How can I sign that jersey for PJ? Please DM me.

— Jon Lester (@JLester34) May 12, 2015

Well done, Chi-town.