Atletico Madrid president Enrique Cerezo confirmed Filipe Luis will rejoin the La Liga club soon as he hailed the arrival of Jackson Martinez.
Speaking at a dinner with Atletico's squad on Tuesday, Cerezo applauded the club's transfer dealings so far in the close-season, with Martinez, Luciano Vietto, Yannick Ferreira Carrasco and Stefan Savic having arrived at the Vicente Calderon.
And Cerezo confirmed the capital club are working to regain Filipe Luis' services.
"Filipe's missing, I don't think it'll take long for him to come in," Cerezo said, according to AS.
"[Guilherme] Siqueira is a great player and he might carry on with us. I'm delighted with the squad, the signings are fantastic and we're going to have a great season."
But with the likes of Martinez coming in, Cerezo reckons Simeone's squad can again challenge Barcelona and Real Madrid for the league title.
"I think we're building a great team and the players coming in more than make up for those leaving," he said.
Martinez's move to Atleti from Porto mirrors that of a former club favourite - fellow Colombian striker Radamel Falcao.
"Falcao is Falcao and Jackson is Jackson; you are a journalist but there are others who are different – it's the same," the 28-year-old said.
