The phrase "late sub" refers to someone who is substituted or replaced with someone else after a certain time has passed, usually not at the beginning or expected time. Full definition
He would come on as late subs in the 2 - 1 loss to Manchester United and the 3 - 0 win over Milan. (arsenalindiasupporters.com)
Most of Monreal's playing time came as late subs in the left midfield where he looked noticeably uncomfortable. (justarsenal.com)
i'd like Diego Simeone as our next coach... but he's building something special there so he won't leave lol... we stuck with the prof, master of late subs for another 2 years at least... well thats if he doesn't renew it lol (justarsenal.com)