It seems very likely imo. We know that the BBPs are going somewhere to retrieve something before the Marines can. If it’s that important to BB, then it’s probably important enough for the Marines to send an Admiral to retrieve. Akainu can’t go because he’s Fleet Admiral. Fujitora can’t go because he has plot protection and may have been sent to Amazon Lily. Ryokugyu can’t go because he has plot protection and hasn’t even been revealed yet, so it wouldn’t make sense to have his debut be him jobbing. This leaves Kizaru as the most logical choice to go after whatever the BBPs are pursuing, leading to a light vs dark battle with BB. Additionally, the secondary color trio amongst the Admirals is incomplete since the color orange is missing, so Kizaru needs to be axed so that the Orange Admiral can be introduced (it could be X Drake?)