Portsmouth have lodged a complaint over Genoa's non-payment of monies owed for Kevin-Prince Boateng.
The South Coast club sold the Ghana international to the Serie A side in the summer after agreeing a £5million fee for the former Tottenham midfielder.
However, Genoa - who immediately loaned Boateng to AC Milan - missed paying the first instalment of that transfer a fortnight ago and there are doubts over whether the Italian side will pay the second instalment, which is due next week.
And Pompey administrator Andrew Andronikou has confirmed the cash-strapped Championship club have lost patience with Genoa and have contacted the Football Association and the Italian Football Federation.
"Genoa were due to pay the first instalment two weeks ago," he said in The Portsmouth News.
"We've been listening to excuses. We've had enough.
"We complained last week on the 15th and got a response saying 'sorry, we mistook your bank details'.
"A week later, it doesn't look like the cheque has even hit the post."
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