If youre looking at cost to benefit ratio, For me it would be Sinclair and Ince. We could get them both for half the price of Eriksen. Fischer as you say is pretty good, not sure he is massively superior to the others, if Ajax sell Eriksen would they get rid of him anyway?
We need two players for each position and 3 goalies for us to have a decent balanced squad. If we can get 2 players oc sufficient quality for 10-12 mil, we should go for it. Then we're gonna need 1 more water carrier, 2 CBs a LB and one more striker! I don't envy Rodgers task this summer at all.