According to well-known transfer reporter Romano, Thiago Jallo joined Roma on loan, and the loan agreement includes a buyout option.
Romano wrote on his social media: "Thiago Jallo transferred from Juventus to Roma, Here we go! The loan agreement includes a buyout option. After Kevin Danso returned to Lens, Danso's deal fell through and Roma signed Jallo. Juventus agreed to loan Jallo, with a buyout clause of 9 million euros and an additional clause of 1 million euros."