The Czech Republic international is currently on loan at Pompey from Ligue 1 side Lyon, but that deal will expire at the end of the season.
With his opportunities back in France likely to be limited due to the emergence of Karim Benzema, a permanent move away from Stade Gerland looks likely.
"It is still too early to know what will happen," Baros told Sport. "In January I wanted to leave Lyon because of Euro 2008 and I did not see me getting a chance in the starting line-up due to the form of Karim Benzema.
"What will happen at the end of the season? We will see.
"Hopefully though, everything will be resolved after the European Championships."