Pretty sure as long as the TFG loan remains then Moshiri cannot refinance debt against the stadium mate.
He'd be refinancing debt using the stadium as collateral when it's already been used as security against the TFG loan (which is fraud) as have his shares btw which he cannot now use as leverage to obtain more debt.
The only option moshiri has is unsecured loans such as the 777 one - which obviously include huge interest payments due to no security, or convincing someone to pay of the TFG secured loan whilst giving an extra loan amount on top of that amount secured against the stadium.
TFG won't be taking payment on that loan they have zero need, so it leaves Moshiri left to either reduce demands, pay of the obstacle - the problematic loans and then sell to TFG, or to take a further loan from sources even more dubious than 777 are at even greater payment cost which will effectively guarantee the club goes into administration eventually.