rob gronkowskis brother says the xfl should sign his little brother glenn rob gronkowskis big bro xfl should sign my little bro no not rob 1262018 tmzsportscom if vince mcmahon wants a big name in the xfl chris gronkowski says his little brother is down to lend his family crest to the league no he aint talking about rob dudes kinda busy but chris tells tmz sports his other lil bro glenn is totally game after getting waived by the patriots during the regular season he just got a super bowl ring last year so sign him up its true glenn fullback was a member of the new england patriots practice squad last season of course we had to get chris to update us on robs status for the upcoming super bowl and he had a similar take as robs bff mojo rawley tmzsportscom