Vikings quarterback J.J. McCarthy should be ready to go for Sunday’s game against the Commanders. McCarthy cleared concussion protocol on Thursday, paving the way for his return to the starting lineup. The rookie quarterback suffered the concussion during Minnesota’s 23-6 Week 12 loss to the Packers and missed his team’s shutout loss against the Seahawks last week. McCarthy, who was placed in the concussion protocol after reporting symptoms on the flight back from Green Bay, said he can’t