The 21-year-old football player's girlfriend Jeanne Marie O'Neil announced the news on Instagram, sharing an ultrasound of their baby and revealing that they've expecting a girl in November 2016.
Nash couldn't contain his excitement, tweeting about the good news.
I'M GONNA BE AN UNCLE!— Nash Grier (@Nashgrier) June 19, 2016
Hayes also seemed overjoyed by the prospect of having a niece.
Will got suspended from football for taking an illegal substance last year, but it's sweet that he's focusing on his personal life now. He has a lot to look forward to. By the end of this year, he'll be a father! Plus, you know his family is ultra-supportive.
Are you excited for the new Grier baby? Click through the gallery to see more photos of Will and his girlfriend.