10mio, I find it very good for a player who has shot Goals like no other recent years, in the Portuguese league (even almost as many goals as games for Sporting). You know, what you get with the package, for me no 1: 1 replacement for Jovic and / or Haller, but with the appropriate input of the Team He is definitely a player who also can achieve +/- 15 goals again in this Season .
Just as Bobic has formulated it after the Leipzig game, is now also a Rebic departure in the last transfer week in front of the door, then there should also come a replacement.
And on top of that Bas Dost has been in the Bundesliga already (2012-2016 for Wolfsburg where he scored 36 goals in 85 matches, quite good numbers), so there will not be much of a integration/adoption-period for him.
Finally since today the deal is officially sealed. Official numbers released by Sporting even stay a lower transfer-fee of 7M.