Middlesbrough chief executive Keith Lamb says the club will honour all payments to Portsmouth for midfielder Gary O'Neil.
O'Neil moved to the Riverside from Pompey in 2007 and Boro have so far paid £3million for the 26-year-old.
They are due to pay another £1m when he plays his 100th game for the club, and he completed his 99th performance for Gordon Strachan's side on Saturday.
Reports had suggested that Boro were trying to change the terms of the final payment, which prompted a Portsmouth spokesman to reveal the Fratton Park administrators' fury to the press.
But Lamb insists all payments will be made and admitted he was surprised to hear the noises coming out of the South Coast.
He said: "I am surprised by the comments attributed to a Portsmouth spokesman.
"All of our payments to Portsmouth relating to Gary's transfer are up to date and I can assure the club and their administrator that should any further payments become due under the terms of the transfer then we will of course honour them."
Cash-strapped Portsmouth are rooted to the bottom of the Premier League and are all-but-doomed to relegation this season.