New dates for the competitions may be known by the end of April.
Marc Pugh is expected to miss Bournemouth's Premier League meeting with Tottenham on Sunday, while Jordon Ibe and Ryan Fraser will both be monitored.
Chelsea have suffered defeats at the hands of AFC Bournemouth and Watford in the last two matches in the Premier League.
There is no concrete evidence to suggest that the injury is just a recurrence of the same hamstring injury that kept him out of action for the first half of the season.
Chelsea completed the signings of midfielder Ross Barkley, striker Olivier Giroud and versatile star Emerson Palmieri in the January transfer window.
Chelsea 0-3 Bournemouth: Classy Cherries damn dismal Blues to joint-heaviest defeat of Conte's reign
Chelsea slipped to fourth after goals from Callum Wilson, Junior Stanislas and Nathan Ake earned Bournemouth three precious points.
Sam Allardyce's side are said to be close to sealing a £20m deal for Walcott, but Merson thinks he would flourish under Eddie Howe.
Davies has featured in 20 Premier League matches this season, starting 11, but has not managed to replicate his encouraging performances from last season.
An Alexis Sanchez-less Gunners remain without a win in 2018 as their Champions League challenges falters again.
Bournemouth have set a £15m asking price for Republic of Ireland international Arter but West Ham do not want to pay over the odds.
Charly Musonda has been given the green light to spend the rest of the season out on loan following the recent signing of Ross Barkley.
Bournemouth manager Eddie Howe had warned that he would not rush into the January transfer market, although the absence of two key strikers could surely change that approach.
Rooney has missed Everton's last two matches through illness but is available to face Bournemouth on Saturday (30 December).
West Ham boss Moyes is keen to add quality to the centre of his midfield, with Bournemouth's Harry Arter and Schneiderlin under consideration.
Jermain Defoe was forced off injured during Bournemouth's Carabao Cup defeat to Chelsea with Eddie Howe fearing the striker has suffered ankle ligament damage.
Live coverage as Chelsea meet Bournemouth in the quarter-finals of the Carabao Cup at Stamford Bridge.
Charlie Daniels and Josh King both left Bournemouth's 4-0 Premier League defeat to Liverpool early, while top scorer Callum Wilson missed the match altogether.
Bournemouth won 4-3 in the same fixture last season but did not lay a glove on Liverpool, who could have had six or seven.
Reports say Klopp is planning for the second half of the season without the England international, who has only featured sporadically for the Reds this season.
Eddie Howe wants his Bournemouth team to use last season's 4-3 win over Liverpool as inspiration ahead of the return of Jurgen Klopp's men to the south coast.
Liverpool duo Adam Lallana and Simon Mignolet could both start against Bournemouth, although Joel Matip, Alberto Moreno and Nathaniel Clyne are all still out.
Bailly has missed United's last eight matches and has shown little improvement in his recovery so far.
United looking to bounce back after suffering defeat by Manchester City, while Bournemouth need a win to distance themselves from the bottom three.
Bournemouth right-back Adam Smith is available to face Manchester United after serving a one-match suspension, although Tyrone Mings has suffered a setback in his recovery.
Arsenal fans have been spotted in Zimbabwe holding a 'Wenger Out' sign during protests against Robert Mugabe's presidency.
Eden Hazard scores the only goal of the match as Chelsea beat Bournemouth and return to the Premier League's top four.
Antonio Conte has reiterated that the final decision on sales rests with Chelsea after being quizzed on the summer departure of Nathan Ake to Bournemouth.
Antonio Conte has confirmed that N'Golo Kante and Victor Moses will miss the trip to Bournemouth but the Chelsea midfielder could recover in time to face AS Roma.
Eddie Howe reveals latest on fitness of Bournemouth strikers Josh King and Jermain Defoe for Chelsea
Josh King is doubtful for Bournemouth's Premier League clash with Chelsea due to a back injury, although Jermain Defoe should be fit after a hamstring problem.
Carabao Cup quarter-final draw: Where to watch live online, draw time, date, ball numbers and preview
Round Five of the Carabao Cup draw will be held at Twitter's UK hub in central London at 4pm BST on 26 October, Thursday.