Ba was deployed up front against Steaua and scored the winning goal but Mourinho was more concerned with the chances the Senegal striker spurned.
"Could get more," said Mourinho of Ba, who has just one Premier League goal this term and missed numerous chances against Steaua.
"He got his goal, it's a good feeling for him. He never played in the Champions League before; this is the first season he has played.
"And he has two goals in the Champions League, which is nice for him. More goals in the Champions League than in the Premier League."