There are several positions that need strengthening - another centre back is a must, as is some creativity in midfield, where I would like to see 2 central midfielders coming in. Mccdermott likes to play with wingers, so I would expect one or even two widemen coming in. Another striker is also a must, to compliment McCormack and Morison.
Much of the transfer policy will depend on young Sam Byram - he's rumoured to be the target of several clubs, with figures between £8 and £10 million banded about. To take the club forward, Leeds need to be keeping hold of the likes of Byram - however, in the real world, an offer of around that amount - potentially with a loan back clause, is likely to be accepted.