Giants' Mike Glennon diagnosed with concussion following Sunday's lossJake Fromm could make NFL debut next week for Giants12/5/2021, 9:51 PMRyan MorikFreelance Editorial ProducerDec 5, 2021; Miami Gardens, Florida, USA; New York Giants quarterback Mike Glennon (2) throws the football during warm ups prior the game against the Miami Dolphins at Hard Rock Stadium. Mandatory Credit: Sam Navarro-USA TODAY Sports / Sam Navarro-USA TODAY Sports