RIO DE JANEIRO, July 27 (Xinhua) -- Sampdoria have offered Brazil's Internacional five million euros to sign highly rated left-back Geferson, according to media reports.

But the Genoa-based outfit face competition for the 21-year-old's signature from their Italian Serie A rivals Fiorentina, Brazil's Uol news service said on Monday.

"Internacional haven't ruled out the move, but are trying to increase the value of the transfer," the portal said.

Geferson is a product of Internacional's youth academy and has made 22 first-team appearances for the club since his debut last year.

He was rewarded for his consistent form by being called up to Brazil's national squad for the Copa America in June and July.