Buy enyeama.He is better than the keepers you have.300k should get him.
Cheristian Benitez might be available for 2m also better than any striker you have.
They both like high wages tho.As for LB maybe dodo for 1.3m tho he isnt as good on 11.3
Very slim chance that David Beckham would join.Should try him tho plays alright as DLP.