Can you check what the upgrade on a type of card will be in-game?

Now you can see what the upgrade will be once you have collected all cards of that type you need in order to buy the upgrade. Is there an in-game way to see what the upgrade will be, so you can choose which type of cards to request / keep?

I know you can check the Clash Royale Wikia, but in-game would save browsing, searching and checking your current level.

Solution 1:

Yes you can. It's qutie simple actually: An upgrade adds +10% to the stats.

For troops:
+10% Hit-points
+10% Damage
+10% Damage per Second 

For Buildings its:
+10% Hit-points
+1 Troop level/ +10% Damage

For Spells its:
+10% Damage
(for freeze +0.3s duration)