I'd say after the Liverpool game that Kinsky looks a real star in the making, and Dragusin looked a pretty decent option with several good ,moments and he's faster than some give him credit for : we may choose to get someone in more suited to Angeball but not sure its high on the 'must do' list, and he may well be here next summer.
So at the moment that list looks pretty good with Gray and Bergvall looking top players despite being only 18, and every chance both will continue to improve - just as they have improved throughout this season with Gray showing huge versatility as well.
Solankle works very very hard, demon presser each game and, with Johnson, leads our scoring/goal involvement charts - and Spurs are 2nd highest scorers in PL.
so lets revisit that list :
Successes/may become excellent : Sollanke, Gray, Bergvall, Kinsky (4)
Decent : Dragusin
Not played enough to asses : Odobert, Yang (but fantastic stats from K League)
Disappointing : Werner
So 4 or 50% are already judged to be successes and may become excellent (particularly the 18 year olds and 21 year old) , with 2 others who have not played enough to be able to asses - they could join the success/excellent list to make it 75% success, or not : lets see at end of the season.
and only one disappointing player (Werner)
I'll take those stats any day !
Nobody but nobody gets 100% success rates in buying players and in the world of buying businesses 50% of all businesses/companies living up to or exceeding pre-bid expectations is regarded as very good stats - most businesses bought do not live up to pre-bid expectations.