Romeu moved to Barca from Girona in August, but has struggled for minutes.
He told RAC1: "There have been moments in which I have had a bad time, like when I don't enjoy playing. It has happened to me sometimes this year.
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"I want to finish this season with good feelings. If I feel that next season I can enjoy playing here, I will try to stay. But I will have to be honest with myself.
Romeu has a contract with Barcelona for the next two seasons, but he adds, "Next season we will evaluate and decide based on what we have on the table."