My guess is perhaps our deal with Joma comes to an end at the end of the season? If this is the case (not saying it is), it would mean only one of our shirts would have a lifespan of one season were we to change kit suppliers for next season, whereas if we were to release a new away shirt, two shirts then would only have a lifespan of one season.Seems odd that we're not changing the away shirt. Maybe moving to an alternating pattern as a method of selling more kits, rather than dropping both at the same time?
It’s very rare that a club would keep a shirt in use for over 2 seasons, especially in this day and age where some clubs (prem ones especially) release 3 new kits a season regardless of sponsor changes.