https://www.fcbarcelona.com/football/first-team/news/2018-2019/18-man-squad-without-umtiti-squad-list
"....The squad for the visit of the club from Bilbao is the following:
Ter Stegen,Semedo, Pique, I. Rakitic, Sergio, Coutinho, Arthur, Suarez, Messi, O. Dembélé, Rafinha, Cillessen, Lenglet, Jordi Alba, Munir, S. Roberto, Vidal and Vermaelen.
Left out are Denis Suarez, Malcom, Samper and Alena with Umtiti missing due to injury.
On Friday the squad trained for the final time ahead of the game against Athletic. All the available players took part in the session along with Inaki Pena from Barca B at the Ciutat Esportiva. Samuel Umtiti did not train due to a knee problem and he will miss Saturday’s game. His recovery will dictate his return to action."
簡單來說Umtiti因膝傷缺席了週五的訓練，連同Denis Suarez, Malcom, Smper, Alena一起被排除在今日大名單之外。
至於U23確切的回歸日期官方還沒有公布任何時間，不過相關媒體的報導有稍微提到
http://www.goal.com/en/news/blow-for-barcelona-as-umtiti-facing-months-out-with-knee/1jwmeo0zryx9s1h8xdh3enojfd
"Ernesto Valverde has confirmed Samuel Umtiti has sustained a serious knee injury, which reports in Spain suggest could keep the 24-year-old defender out for several months.Umtiti played the full 90 minutes in Wednesday's stunning 2-1 defeat at Leganes which ended Barcelona's unbeaten LaLiga start but missed training on Friday ahead of the weekend clash with Athletic Bilbao.
The France international is not in contention for the Camp Nou clash against Valverde's former club and, although already suspended, would not have been fit enough for the midweek Champions League match versus Tottenham at Wembley.
"He's got a knee problem so he couldn't have played on Wednesday," said Valverde.
"Let's see how things develop, but hopefully it won't be too long before he's back with us. It's a blow for us."
A report in AS claimed Umtiti had suffered ligament damage in his left knee and may not play again in 2018...."
主帥證實了U23的膝蓋傷得不輕，各家媒體都預估需要數個月才能回來，比較誇張的也有預估要明年才能復出。