Hes been released back to his club there must be a limit in call backs due to injury. I can't see Saracens willingly releasing a player this close to kick off and I can't see RFU being to happy with them if they did.
I dunno, is there? If so, then how close is too close?
If IRB9 doesn't forbid a late call-up, then the late call-up is allowed, no matter how p
issed off the club.
Common sense would seem to dictate that a late injury requires a late call-up, which would be better than an incomplete bench. Common sense would also dictate that the player called up comes from a club playing at home, where they'd have a replacement already in the stadium - but that common sense is less likely to apply to a club from a different league (there is good-will between RFU and the English clubs, there is bad-will between WRU and the English clubs).
Of course, today it's not happening, but I don't know what the rules would say for a future occasion (and probably depending on when the decision is made; once club warm-up starts, probably too late).
Plenty of teams take travelling reserves for injuries in the warm-up (England have kept Mercer in camp this weekend), but there absolutely is a time when a fresh call-up is fair, and a time when it isn't; but where is that cross over? 24 hours? 2.4 hours? 24 minutes?