Porto boss Sergio Conceicao is upset learning Manchester United are moving for Vitinha.
The midfielder is being tipped as another option for United amid their pursuit of Frenkie de Jong, with talks with Barcelona seemingly going slowly.
Record says Conceicao is annoyed with Porto's hierarchy for actively looking for a buyer for Vitinha, with Jorge Mendes said to have been tasked with finding him a Premier League club.
The former Wolves loanee has Arsenal and PSG also interested.