Celtic are reportedly considering a transfer move for £8.5m winger Raul Moro.
The 22-year-old is a possible transfer target for Brendan Rodgers this month, according to reports in Spain.
El Norte de Castilla reports Celtic are among the clubs considering a move for Moro with Ajax also credited with an interest in the Spaniard.
Moro - who signed for Real Valladolid after an initial loan from Lazio - has scored four times in 19 outings for the La Liga side so far this season.
He played his part in helping Valladolid achieve promotion to the Spanish top-flight and has attracted transfer interest with his outings in the top tier.
However, The Daily Mail claims Moro could be allowed to leave the club this month in order to finance transfer deals to strengthen other areas of the relegation-threatened side.
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Ajax technical director Alex Kroes has gone public with interest from the Eredivisie club but no agreement has been reached over a transfer deal.
The Dutch club is said to have so far failed to reach Valladolid's asking price for the winger.
Kroes said: "We are interested in Raul Moro, yes. Moro can play on both the left and right wings."
It's reported Celtic's interest is known by Valladolid but no offer has been tabled by the Parkhead club.
Meanwhile, Celtic have also been linked with a move for Sarpsborg winger Sondre Orjasaeter.
The same report claims extensive scouting has been carried out on the 21-year-old who is being chased by a host of clubs in Europe.