Toronto FC will be without Jozy Altidore for between four and six weeks after the U.S. striker had foot surgery to remove bone fragments, his club said on Wednesday.
Altidore, 28, had already missed Toronto's last two games -- a 2-2 draw with the Chicago Fire and a 3-0 win against the Philadelphia Union on Friday night -- after injuring his hamstring in the team's CONCACAF Champions League second leg against Chivas.
The striker has scored five goals and assisted on a further two in a combined 11 Major League Soccer and CCL matches.
The surgery will also rule out Altidore from participating in U.S. national team camp ahead of a friendly against Boliviia later this month and the games in Ireland and France in June.
Toronto FC has ground to make up in MLS after prioritizing the Champions League campaign over the past two months. The defending MLS champions have just seven points after losing four of the first seven league games.
His absence will force the Reds to rely even more that usual on Sebastian Giovinco, who said last month that he was unhappy that the club has yet to open talks over a new contract.