We need 7-8 more I reckon:
GK
RB (hoping McMillan will stay - which teams are likely to come in for him? Dundee, Dundee Utd, St. Johnstone?)
CB or DM or both (depending on where Doolan sees MacBeth starting. If he thinks MacBeth-O’Reilly is the defensive pairing with Muirhead and Williams as back-up, then we need a Byrne-type signing. If he sees MacBeth as our defensive midfielder, we need to sign a starting centre-back and could probably get away with not signing another midfielder.)
W x2
ST
Then another defender who can cover across the backline would be ideal. Musonda would fit the bill, as an example.