Valencia and German big man Tibor Pleiss are in advanced negotiations regarding a potential deal, according to Spanish outlet Gigantes Del Basket.
The 27-year-old center has prior experience in the Liga Endesa with Baskonia with where he played from 2012 to 2014, when he made the jump to the NBA for the Utah Jazz.
Pleiss spent last season in Turkey with Galatasaray, averaging 7.7 points, 4.6 rebounds in EuroLeague.
The reigning league champions have been looking to add to their frontline with the veteran German a perfect fit alongside Bojan Dubljevic and Latavious Williams.