Celtic's transfer pursuit of Vinicius Souza has taken a setback, according to a report.
The Brazilian midfielder has been linked with a loan move to Parkhead this summer but interest is high in securing his services.
It's believed the likes of PSV, Fenerbahce, Club Brugge and Bologna all hold a transfer interest in the 22-year-old - with the Dutch side making an official move for his signature.
Ange Postecoglou has a list of summer targets as he bids to strengthen his Celtic team in their defence of the Premiership title they won from Rangers while make a splash in the Champions League next term.
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However, Sky Sports news reporter Anthony Joseph reports that the midfielder has reservations about making the move to Scotland.
But is keen to take his time and explore all options on the table.
He wrote on Twitter: "Celtic are interested in Lommel SK defensive midfielder Vinicius Souza but face competition from a number of clubs, including PSV, Fenerbahce, Club Brugge and Bologna.
"PSV made a formal approach to Lommel earlier this week.
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"It's understood the player wants to play in Europe next season, but has some reservations about moving to the Scottish Premiership.
"However, he is keen to take time to explore all his options."
Celtic earned their spot in the group stages of Europe's premier competition after finishing above Rangers in the race for the Premiership title.
They also landed the Premier Sports Cup as Postecoglou secured a domestic double in his maiden campaign.
