Need a Wireless Transmitter that does FTP, for Sport Photography

[Joeturner11]

Iam looking for a Wireless Transmitter to send images over a FTP Router during a Football Match, I have seen the Nikon WT-4 That is £559, Just wondering if there is any other's out there, and worth getting.

Also I will need one that is compatible with Nikon D700's and D300

Cheers Joe