Rob Gronkowski announced his retirement from the NFL Tuesday

Former teammate Julian Edelman shared a creative tribute to Gronk via Instagram.

Edelman and Gronk played nine seasons together with the New England Patriots.

 Edelman shared a slideshow on Instagram of four photos, the first one being a Calvin and Hobbs-style picture.

In the photo, cartoon versions of Edelman and Gronk are seated in a moving wagon with Edelman steering and Gronk seated behind him. 

The last image was a Calvin and Hobbs cartoon with Hobbs saying, “If good things lasted forever, would we appreciate how precious they are?”

“There will only ever be one Gronk,” Edelman wrote as a caption. “Love you bro. #FoxboroForever”

There is a chance Gronk could come out of retirement. Gronk’s agent made a prediction about a possible return for Gronk if Brady calls this season.