Ivory Coast striker Didier Ya Konan will miss their FIFA World Cup clash with Colombia on Thursday due to a knee injury.
Coach Sabri Lamouchi confirmed the Hannover forward was also in doubt for their final Group C clash with Greece in Fortaleza on Tuesday.
Ya Konan came on as a second-half substitute in the Ivorians' 2-1 win over Japan but almost immediately looked to be struggling, and Lamouchi confirmed on Thursday that he hopes to put his player on ice with an eye to the knockout stages.
"We do not want to take any risks with him," Lamouchi said, ahead of Ivory Coast's clash with the Colombians in Brasilia.
"We hope he will recover as early as the match against Greece but if that doesn't happen then maybe for the second round."
Lamouchi warned Ivory Coast's inexperience at World Cups could be a factor against the battle-hardened Colombians, and claimed the midfield stoush would be influential to the result.
"Colombia and Ivory Coast have never faced each other in their history," Lamouchi said.
"I want to emphasize first that Ivory Coast will play in only its eighth World Cup match ever, so the game against Colombia...will be totally different opposition to Japan.
"These are two teams with an opposite style. We know it will be a tough match. We will not get that much space.
"It will be a match where we need to win our duels in midfield to impose our game. We know we have the weapons to compete but we must be careful."
Lamouchi was not underestimating Colombia's attacking strength, despite Radamel Falcao absent from their squad to injury and Carlos Bacca ruled out of their clash on Thursday.
"It's a team that has offensive strengths. Just look at their bench," Lamouchi, a former France international, said.
"Jackson Martinez came on during the match against Greece. They have many important assets.
"I don't know how they will approach the game. What I know is that it will be different from the match against Japan.
"We have to be ready to face the Colombians tomorrow."
|Coach: J. Pekerman|
for V. Ibarbo 53'
for P. Armero 72'
for A. Aguilar 79'
|Inter 1 Bayern Munich 4: Hat-trick hero Green enjoys happy homecoming|
|Ibrahimovic keen for ´interesting´ Pogba deal|
|Conte unsure over Costa´s Chelsea future|
|Zidane: Morata will remain a Madrid player|
|New York City 5 Colorado Rapids 1: Lampard hits hat-trick in MLS rout|
|Sergi Roberto ´more than a player´ - Luis Enrique|
|Mourinho hints at United future for Mata and Fellaini|
|Real Madrid 3 Chelsea 2: Hazard show too late for Blues|
|Penalty woes for Everton, Gray treble inspires Burnley at Ibrox|
|Atleti to present Gameiro on Sunday|
|Ibrahimovic nets debut goal as United put five past Galatasaray|
|Barcelona 3 Celtic 1: Messi, Suarez in action as Catalans cruise to victory|
|WATCH: Zlatan open his Man Utd account with acrobatic goal|
|Alba: It would be foolish not to respect Ronaldo, but Messi on another level|
|Lahm hails ´sensational guy´ Schweinsteiger following Germany retirement|
|Stones´ professionalism praised amid City reports|
|Roma suffer Rui blow|
|Inter complete Ansaldi move|
|Nainggolan confident of Roma challenge despite Juve investment|
|Rummenigge tells off Ribery over Guardiola dig|
|Meli makes Sporting loan switch|
|No repeat of slow start, vows Allegri|
|Mourinho desperately wanted Embolo at Manchester United, claims Heidel|
|Dembele can do anything - Tuchel|
|Pogba arrival would boost Rooney - Yorke|
|Ben Yedder makes Sevilla move|
|De Jong signs PSV renewal until 2020|
|Kovacic to fight for his place at Real Madrid|
|Sturridge out to improve goals-per-game ratio|
|Mourinho hails ´humble´ Ibrahimovic ahead of United debut|
|Schweinsteiger will not leave Manchester United for Bundesliga return - Rummenigge|
|Benatia on target again in Juve win|
|Atletico set to sign Gameiro|
|Zenga appointed Wolves boss|
|Flattered Verratti not seeking Madrid move|
|Ancelotti: Growing transfer fees nothing special|
|Eriksson: Ibrahimovic and Mourinho combo enough to win Premier League|
|Meunier: I could not reject PSG|
|Klopp: I didn´t want Mkhitaryan|
|Anything could happen before transfer window shuts - Zidane|
|Montoya leaves Barca base, nears Valencia switch|
|Wijnaldum: I´m happy to play anywhere|
|Klopp backs Mignolet after Karius injury|
|Liverpool suffer Karius injury blow|
|Ranieri confident Mahrez will stay as contract talks continue|
|Emery confirms interest in Jese|
|Higuain´s Juventus move not about money - agent|
|Wolves sack head coach Jackett|
|Zidane: Ronaldo unlikely to play Madrid La Liga opener|
|Ibrahimovic: United fans are waiting for me|
|Deulofeu shines for Everton, Cook opens Bournemouth account|
|Higuain out to emulate Del Piero|
|Kante does his talking on the pitch - Conte|
|Mourinho explains Fosu-Mensah snub|
|Klopp: No more unwanted players at Liverpool|
|Inter want more than €60m for Icardi - Thohir|
|Leicester can replace Kante - Ranieri|
|Lazio complete Wallace signing|
|Gueye set to join Everton, confirms Di Matteo|
|Tuchel: Transfer market has gone cash crazy|
|Leicester hand King new four-year deal|
|No deal done for Pogba, says Raiola|
|Rooney: Mourinho impact already huge|
|Lafferty hit with FA betting charge|
|Top-four finish never enough for Arsenal, insists Wenger|
|Partey hoping to make his mark on Atletico squad|
|Ibrahimovic in, Schweinsteiger out as United head for Galatasaray friendly|
|Vietto set for Sevilla after completing medical|
|I rejected Besiktas to fight for Barcelona spot, reveals Mathieu|
|De Laurentiis fumes at Higuain´s ´lack of respect´|
|Promising Janssen boosts Tottenham´s title hopes|
|Besiktas sign Adriano on three-year contract|
|Tottenham 0 Atletico Madrid 1: Godin grabs the winner|
|Gomis completes Marseille loan move|
|Iniesta surprised at Casillas-Del Bosque spat|
|New Juve signings do not guarantee success - Allegri|
|New Juve signings do not guarantee success - Allegri|
|Middlesbrough snap up goalkeeper Guzan|
|Guardiola still loves Ribery despite jibes|
|West Ham worry over Tore injury|
|Serie A could be another one-horse race, says Eriksson|
|Schweinsteiger retires from Germany duty|
|Iniesta welcomes Barca´s midfield competition|
|Drogba: No luck in Arsenal scoring record|
|Wenger seeks ´experienced´ striker to bolster Arsenal attack|
|Eriksson and Shanghai SIPG still fighting|
|MLS All-Stars 1 Arsenal 2: Premier League giants win late as Xhaka makes debut|
|Conte: I want aggression and intensity|
|Wimmer backs physical Janssen for Tottenham success|
|Klopp: I wouldn´t spend £100m on one player|