Saints sign Chase Young to 1-year deal up to 13M (2.7M base, 1.86M signing, 450K workout, 7.99M total gameday roster bonus)

That solves the fully guaranteed mystery, if we cut him we have to pay him the roster bonuses, if he makes the 53 he only earns them if he is active. Pretty high chance of earning the bonus unless he ends up on IR or PUP.