Ronald Koeman is to go under the knife after rupturing his Achilles but the Southampton manager will be on the bench against Vitesse Arnhem on Thursday.
The Dutchman sustained the injury toward the end of training at the GelreDome on the eve of Saints' Europa League third qualifying round second leg.
The incident saw Koeman leave Arnhem behind the team coach in a van, which he boarded on crutches with his foot in a protective boot -- aids that will be needed again on Thursday.
He will be in the dugout as Southampton look to protect their 3-0 first-leg advantage, but assistant Erwin Koeman will take the post-match news conference, when he will no doubt face questions over his brother's injury.
The Daily Echo posted a video of the head coach on crutches before Thursday's game:
Press Association Sport reported that Koeman has been advised to have his ruptured Achilles operated on as soon as possible, meaning he could miss Sunday's Premier League opener against Newcastle.
Trouble flared up before Southampton's Europa League clash in Arnhem, with police storming in after glasses, chairs and punches were thrown.
There was a peaceful, convivial atmosphere in Arnhem for the majority of the day, only for things to go awry two hours before the game got underway.
The issues arose in Korenmarkt, the city's bar district, where English and Dutch supporters had spent much of the previous 24 hours drinking together peacefully.
However, riot police and horses were called in after clashes began, which some onlookers said came after provocation from Feyenoord supporters.
PA reported 50 Dutch fans and three English supporters were arrested. There were no problems in the Southampton fan zone in the nearby Jansplaats, while buses were put on for fans to the stadium.
A Southampton spokesperson said: "Southampton Football Club are aware of an incident away from the official fanzone in Arnhem.
"We are continuing to liaise with local police and will take relevant action against those involved."