Karl Robinson could be without Ezri Konsa for tonight’s match - the young defender had to be substituted during the first half of Saturday’s draw at Rochdale.
He could be replaced by Jorge Teixeira - who scored twice at the weekend - and, elsewhere, Nathan Byrne is available again following suspension.
Jason Pearce, Harry Lennon, Roger Johnson and Ahmed Kashi remain sidelined but Fredrik Ulvestad is edging closer to a return and may resume training soon.
For Oxford, Joe Skarz could return following illness.
Wes Thomas and Aaron Martin are both out with Achilles injuries but back-up goalkeeper Jack Stevens could return to the squad after being cup-tied at the weekend.
Charlton and Oxford United have come up against each other 38 times in the past, with the Addicks winning 17 of those. United have been victorious seven times while there have also been 14 draws.
The two sides contested a 1-1 draw at the Kassam Stadium in September. Johnnie Jackson fired Charlton in front from the penalty spot before Chris Maguire levelled for the hosts.
Charlton defender Jorge Teixeira: “There are still 45 points to play for and a lot of games. It’s important that we stop drawing and get three points every game.
“Now we have an important game on Tuesday. We hope that the fans of Charlton come to support us and that we can give them a victory.”
Oxford United Manager Michael Appleton: “Karl is stamping his authority on the place and you can see comparables with what he did at MK Dons starting to come through now. We know what they are about, what their strengths are. We have to be mindful of that but we also know what their weaknesses are and will look to try and exploit those.”
Gavin Ward will be the man in the middle at The Valley tonight.
So far this season, he has officiated 28 matches where he has brandished 96 yellow cards and four reds.
Ward last took charge of Charlton earlier this season, for our 3-0 victory over Shrewsbury Town in August.
He will be supported by linesmen Stephen Finch and Andrew Laver and fourth official Carl Fitch-Jackson.
Supporters can follow all the build-up to the game on Charlton's official Instagram account, official Twitter account, Facebook page official Snapchat account and on the CAFC Wall.
Live commentary of the clash will be available on the club’s Matchday Live service on CAFC PlayerHD.
Supporters can follow live updates and have your say by using the CAFC Wall. An in-depth match report and full match reaction will be available shortly after the final whistle, while supporters can watch extended, multi-angle highlights on CAFC PlayerHD.
Tickets for tonight’s match remain on sale. It has been classified as an Addicks silver game and ticket prices start at £17 adults, £14 adult disabled, £13 over 65s, £10 students, disabled concessions and U18s, and £5 U11s.
Tickets for the match can be purchased in person from the Valley Superstore, from the Ticket Office on the night of the game, by calling 03330 14 44 44 or by going online. Please click here to visit our ticketing website.
The Charlton Club Crossbar Challenge prize fund will stand at £6,000 tonight.
The half-time competition, which launched earlier this season, began with a £500 jackpot and rolls over by an additional £500 every time it is not hit.
The challenge is open to jackpot ticket purchasers* and all members of Valley Gold – the sponsors of the event – who will automatically be entered into the draw. They are tasked with striking the crossbar from the edge of the D (22 yards out) in just one shot.
Please click here for more informationon the Crossbar Challenge
PREVIEW | Charlton v Oxford United
February 21st, 2017
Read Time: 3 mins