At the arrival ceremony in Durazno, Uruguay for the first two Super Tucanos, the Uruguayan Ministry of Defence issued a statement that included mention of the search for another combat aircraft, presumably a jet aircraft. The Fuerza Aérea Uruguaya have no doubt advised the government that future narco trafficking flights can adapt to the presence of the Super Tucanos by switching to aircraft with higher speed and altitude which would require the FAU to acquire aircraft to counter that threat.
During Uruguayan President Yamandu Orsi's recent visit to China there was no official mention of military acquisitions but given the increasing economic relationship between Uruguay and China, I would definitely say it's possible and have to think the L15 remains a prime candidate. Uruguay has cancelled it's OPV deal with a Spanish company which might reopen a deal with China and that could easily include other weapon systems...