The 25-year-old has been sidelined ever since suffering a serious knee ligament injury during a 4-1 loss to eventual title winners Manchester City back in April last year.
Speaking about Rodriguez’s situation, Koeman revealed he isn’t willing to risk the England forward unless he is completely sure he is ready to return to action.
He said: “He’s a very good player but we don’t put pressure on him.
“He has to be fully fit. If that’s at the end of the season then I’m pleased, but if not then next season.
“For me the fitness of the player is more important than the position in the table.”
Although he returned to light training ahead of the January window, alerting Arsenal Spurs, and even Manchester City to his availability, his rehabilitation didn’t go to plan as he may now need to continue gaining back his fitness until the summer.
He was on great form in the previous campaign, netting 15 Premier League goals in 30 starts under the Saints’ previous manager Mauricio Pochettino.