Osasuna are thought to be interested in signing NAC Breda winger Leonardo in the January transfer window.
The Brazilian attacker, who joined NAC last January from Eredivisie rivals Feyenoord, has impressed in early stages of the current campaign.
Reports in Holland suggest the former Novra Safra man's abilities have attracted the interest of the Navarra club, with suggestions that another January move to Estadio Reyno de Navarra may be in the offing.
It remains to be seen if the South American would be interested in ending his long association of playing in the Dutch top flight, after making his Eredivisie debut back in November 1999.
Meanwhile, NAC Breda will be without right back Kurt Elshot for up to six weeks after scans showed the defender injured the meniscus in his knee.
Elshot sustained the injury in the warm-up before Sunday's 3-2 defeat at Feyenoord and will undergo surgery to repair the problem on Wednesday.