The phrase "ready replacement" means a product or service that is readily available to replace another one in case of damage, failure or need. Full definition
Inevitably, though, there was a clamour for Pochettino to go out and spend some of that money on a first - team ready replacement for Walker. (footballwhispers.com)
Description: This recall involves Britax B - Ready strollers and B - Ready replacement top seats that were sold separately. (us.britax.com)
and the same home grown quota issue is also the reason we might be stuck with these players, unless we have ready replacement already lined up... and looking afield I don't see many out there good enough to improve the squad (justarsenal.com)