However, AS Monaco vice-president Petrov wants Falcao to stay put and see out the rest of his contract.
"Falcao told us that he wants to play in the Champions League, but we want him to stay in the team," Petrov said. "Falcao is a very good professional. He has to respect his contract with us."
Ben Yedder led Monaco's attack in Falcao's absence against Metz last weekend but was unable to prevent his new employers slipping to a second successive defeat at the start of the new season.
Rather than replace him, Ben Yedder hopes to get the chance to play alongside the 33-year-old.
"I will be glad if Falcao stays," he said. "Falcao is an extraordinary player and if he stays we will try to do everything to be at the top of the table, scoring as many goals as possible.
"I learned a lot from the Spanish league and it's very important for me to continue and improve."
Monaco are reported to have paid €40million to trigger Ben Yedder's buyout clause, offset by receiving €20m for Lopes in a separate deal.
Islam Slimani became the French side's latest signing of a busy window on Wednesday, following on from the arrivals of Gelson Martins, Benjamin Lecomte, Henry Onyekuru, Ruben Aguilar and Ben Yedder.