15 million!
Putting aside the target player for now, just this amount was enough to set off stormy waves. The news revealed was very clear that this price didn't include the character, only the player. Without a doubt, if this transfer was successfully completed, the value of professional Glory players would reach a new high.
It was worth noting that the current record for the most expensive player transfer was already set by Team Wind Howl. In the summer window between Seasons 8 and 9, Tang Hao transferred to Wind Howl, and that price of 10 million was currently the highest.
The winter transfer window was generally only for small adjustments and supplements, or if a team needed to fill a hole because of illness or other such special reasons. When Excellent Era obtained Sun Xiang in Season 8, that was a rarely-seen core player transfer. But that, too, was only because Ye Xiu had retired mid-season and Excellent Era was forced to fill the gap.