Siopis may still be in play, for around 1.5mm (transfer fee, not contract, which I'd imagine would be around that much).
Maksimovic might not be coming this year because the team knows they can easily get him next summer for free (and Getafe seems to still want too much money). If Siopis is a good enough Augusto replacement, this would be a solid move IMO...we'd lock down a starter for next year, while still being all set for this year. Schwab will be gone by then as well.
Of course, this isn't stopping someone else from snapping him up over this next season. So who knows!