French outfit Sochaux are set to complain to Uefa about an alleged illegal approach by Newcastle for striker Modibo Maiga.
Magpies boss Alan Pardew is keen to bolster his front line before the close of the transfer window and he has been linked with a £10million move for the Mali international.
The 23-year-old is aware of Newcastle's interest and such is his desperation to push through a transfer he even went on strike.
However, Sochaux chairman Alexandre Lacombe claims the Premier League club have spoken to the striker without their permission and is set to report them to Europe's governing body.
"Newcastle are going on contacting our players despite our refusal," Lacombe told L'Est Republicain.
"So we will register a complaint with Uefa, telling them such behaviour is not fair play. It is provoking destabilisation."