In the summer of 2009 there were rumours that 1860 Munich was interested in signing him. Finally Ngwat-Mahop stayed with Red Bull Salzburg and he featured in the whole match, in what was Red Bull Salzburg's first match of the season, a 1–1 home draw against Irish outfit Bohemians for the second Qualifying round of the 2009–2010 UEFA Champions League. He was, once again, a starter at Red Bull Salzburg' opening match of the 2009–10 Bundesliga season, but he was substituted in the 40th minute by his fellow countryman Somen Tchoyi. Later it was known that Ngwat-Mahop suffered a tear of the left anterior thigh muscle, an injury that would keep him out of action for months. He managed to fully heal from his injury and play again for Red Bull Salzburg almost nine months later, in a 4–2 home win against SC Magna Wiener Neustadt, as he came in as a late substitute for Somen Tchoyi. At the meantime Ngwat-Mahop played in five games for Red Bull Salzburg Juniors managing to score four goals, two of them in a single match, a 3–0 home win against SC Austria Lustenau. At the end of the season he had only managed to play in two league games and one European game for Red Bull Salzburg and did not score any goals.