I started the same thread last year and it was reasonably successful despite being dead now, so here it is again.
It's basically about what it says on the tin: what are the transfer fees you paid when buying your current first team squad.
Players in the youth or reserve team don't count and players that have come through your academy count as being free. Just post the team name, the position the players play in and the fee. Extra details like player names, screenshots and dates are welcome but not necessary. For players bought before you took over it's the fee that was paid by the real life/previous management.
Here's mine from my current Roma save in January 2014:
Position, Name, Fee, Current Value
GK Stekelenburg - £10.5M (undisclosed, so I took his current ingame value) - £10.5M
RB Bandalovski - £1.1M - £1.9M
CB Kara - £1M - £6.5M
CB Astori - FREE - £10.25M
LB Jose Angel - £3.9M - £7.5M
CM De Rossi - FREE - £9M
CM Bertolacci - FREE - £2.5M
RW Gaitan - £2.5M - £2.8M
AM Pjanic - £9.5M - £5.25M
LW Lamela - £10.25M - £6.25M
ST Bendtner - £2.7M - £3.2M
S1 Gonzales - £875k - £875k
S2 Douglas - £5.5M - £3.5M
S3 Simunac - £450k - £675k
S4 Muniesa - FREE - £2.9M
S5 Boyata - £2.4M - £2.5M
S6 Brighi - £11M - £1.4M
S7 Pizarro - FREE - £1.9M
S8 Labyad - FREE - £4.6M
S9 Ait Fana - FREE - £5.75M
S10 Villanueva - £500k - £1.3M
Total Paid: £62.175M Average: £2.96M
Current Value Total: £91.05M Average: £4.34M
Lost/Gained Total: Gained £28.875M
Pretty much in line with what I expected since I was forced into bargain hunting from the start of the game due to the lack of money at the club. The transfer fees paid out by the previous management inflate the total quite a bit, but it's not bad for a team that is currently topping the Serie A by eleven points with a game in hand. I think in the future there will be larger fees as I strengthen the team, though with a policy aimed at bringing through youngsters there will also be huge fee/value disparities if they come good.