Hmm, let's see. Suarez is worth £70m to Barcelona apparently, and according to that chart he's on a par with Balotelli converting chances.
So I'd suggest if Balotelli is available, we sign him from Milan for the reported £25m and then sell him on to Barcelona for £60m, undercutting Liverpool.
We can then use £15m of the £35m profit to sign Cavani from PSG—he should be on the market for about that given, according to the chart, he's only about as good as Olivier Giroud.
And snap! We've brought in Edinson Cavani and made a £20m profit. I thought these transfer deals were supposed to be hard?