The talented young winger currently plays for Espanyol, who are keen to keep him.
The player in question is 18-year-old Juanan Entrena, who currently plays for the RCD Espanyol 'Juvenil A' (Under-18's) side, but also has a wealth of experience at other notable youth academies.
Hailing from the small agricultural town of Huetor-Tajar in Granada province, perhaps more famed for producing asparagus than footballers, Entrena started his youth career with Granada CF, followed by spells with Sevilla FC and FC Barcelona.
Seen as somewhat of a late developer, in 2013 he made the switch to Espanyol and particularly this season, his talents appear to have blossomed, leading to a wealth of interest from other clubs around Spain and Europe.
A left-winger, noted for his explosive speed, dribbling ability, powerful shooting and comfortable with both feet, Entrena impressed the Celtic scout enough to make firm enquiries, after watching him in action recently.
The match observed by David Moss was an important one for the Espanyol 'Juvenil A' side, with Entrena scoring what would be the decisive goal for his team against Jabac Terrassa, thus clinching the Division de Honor Group 3 title on 22nd March.
Espanyol will now compete for the overall championship title, the Copa de Campeones, which is a two-phase tournament at the end of the campaign, along with the Copa del Rey Juvenil, which begins with two legs against Valencia CF in May.
Whether Celtic will make a formal approach for Entrena, remains to be seen, but it may be difficult to prise the talented young winger away from Espanyol. He currently has another year on his existing contract, plus a further two-year option, and is expected to step up to the B team next season, possibly with options of first-team appearances.
However, there has been a hint that Entrena is impressed by being linked with Celtic, as the player retweeted the story about the interest of the Scottish giants, via his own Twitter account, @juananentrena.