According to RMC's news, Rennes is about to lease Rugani, and they will not introduce Saliba.
Reports claim that Rugani will arrive at the team on Friday night local time and he will join Rennes on loan.
It is not yet known whether Rugani's lease contract contains a buyout clause, but reports expect Rennes to lease him purely.
Rennes is also negotiating with Arsenal on the loan of Saliba. The negotiations between the two sides began four weeks ago, and Arsenal have been more willing to rent him out in the last few hours.
However, Rennes chose to introduce Rugani, and some English and German clubs are still interested in introducing Saliba.
As there are currently sufficient personnel in the back line, Arsenal are willing to rent Saliba.