By Alek Arend If Lamar Jackson’s latest social-media activity is any indication, he’s not too happy with the Baltimore Ravens. Jackson, who represents himself, is in ongoing contract negotiations with the AFC North franchise. However, the two sides have yet to come to a deal. Things just got a bit more complicated. Jackson’s new Instagram profile picture sends a clear message. Oh boy. Let’s take a look at what NFL fans are saying about Jackson’s clear message for Ravens’ management. “They better pay him before it’s too late,” one fan said. “This isn’t the NBA. I don’t understand these comments…