Because having a 21 man or a 25 man senior squad provides different levels of cover and options if there is an injury crisis. I'm all for giving academy graduates chances as often as possible but you don't want to use them in difficult situations they aren't ready for yet either. We can't buy players to fill those 4 club developed slots (unless we buy back the likes of Suso) so we either use or lose those squad places. How much would we really be able to sell those players for? How much would we save in wages? Do we really need that money? Even if they only sit the bench a couple of times it might be worth more than we can sell them for financially. Might be anyway. Decision to be made by Klopp obviously. But Flanagan has done well in the past and Wisdom seems to be doing well on loan. They're better than having an empty place on the squad list at least in my eyes. If there are kids ready to be used from the academy instead then fine.