The 29-year-old, who has netted three goals in eight appearances for the Scottish champions during the 2025/26 campaign, was an unused substitute in the game against Feyenoord in Rotterdam last month.
And new Celtic manager Nancy is hopeful the former Manchester City, Leicester City and Sevilla forward will be able to contribute during the meeting with Italian side Roma tomorrow evening.
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The news is positive for the Frenchman as he only had one fit striker, Johnny Kenny, available to him in the William Hill Premiership game against Hearts on Sunday and had to play winger Daizen Maeda up front.
“He has trained well,” he said. “After that, he needs minutes. It has been a long time, two months since he really played.
“The way we work the players who have not played regularly, we try to get them through physical work to get back into the rhythm. For the moment obviously he is not fit to play a lot of minutes, but a few minutes, yes. We will see.”
Nancy continued, “Many players have played many games in a row so I have to be careful. The complexity is we have a game tomorrow and three days later we have a final (Celtic play St Mirren in the Premier Sports Cup final at Hampden on Sunday).
“This is the tricky part. The idea is to assess and try to anticipate the subs I would like to do, but we will see live. I have to understand that also in the past they did not rotate much. So I have done my work on that. I believe we have the players to do that but it has to be step by step.”