Ripoll told au Glasgow Times: “As with all French hopefuls playing at this level in an important club, he [a full French cap] is obviously a big goal for him.
“He must continue to work to improve himself because he has all the capacities to do better and better.
“Celtic are a historic and very important club, but it is true that a great European Championship can help them take them to the next level.
“When? This is another question.
“He should not set limits. He only needs to focus on his job and the improvements he can make, because he certainly has great potential.
“As I said before, this can be a step forward in his career [to go to a bigger league], but Celtic offer him a lot of positive things and allow him to compete on the European stage.
“The France team is the dream of all our young players and I wish them all to achieve it. “