Im playing as newcastle too in my second season. Heres who I got in those positions.
Striker -Lucas (sao paulo) he is an utter beast in the second season. Starts as amc but retrain him 6.5m
CDM - De Jong - was transfer listed at end of season 1 5.5m
GK - Vincent Enyeama 8m
at the end of the first season there are some top players on the transfer list if you have a look.
If on official updates Enyeama's 275k at most, on LFC Marshals patch got him for free transfer start of 2nd season.