In our current situation when we need to rebuild our team and bring in quality players,+/- 5 mil shouldn't be a problem for a star player like Diego.
We now have a pretty deep squad and a decent number of good squad member players which we have established over the last two seasons. Players like Grygera, Poulsen/Zanetti, Legro should be decent backup for our team.
Now is the time to build on top of that base, so its inevitable that we have to pay more for less players this summer. I think this year the mindset should and by the looks of it will be;quality over quantity.
£29m for Diego is a big gamble in my opinion, quite a bit over the odds, but it is clear that Secco has proven to be very capable at convincing players to join us but at negotiating with other clubs.
Nonetheless, to add quality thats what you need to pay, and if he plays at Juve like he has for Werder he will be well worth it.