Courtois joins Tottenham's Harry Kane in a late fitness battle with both clubs expected to make a late decision over their ability to feature in their respective matchday squads - per the Telegraph.
Alderweireld has endured a torrid five-months, during which he has had hamstring problems and made only two appearances for the club. "Otherwise, we continue to stay not so close and, with seven games to go, it will be hard to take a place in the Champions League".
But it also has a £25m release clause that could be activated in the summer of 2019, as long as a transfer is completed at least 14 days before the end of the window.
Tottenham manager Mauricio Pochettino says "I can not say no, but I can not say yes" about Kane's availability for the match at Stamford Bridge.
Expect two hard-working, powerful Spurs players in the centre of the pitch - Mousa Dembele and Victor Wanyama is the obvious combination, but Eric Dier could be deployed there too.
"Every single player needs to show in training that they are better than their team-mate and then I pick", Pochettino said.
Kane is stepping up his recovery from an ankle injury he picked up in this month's 4-1 win at Bournemouth and will be assessed before the match. Now, he is playing and we use a back four, with two centre-backs, and we play Jan and Davinson. I am not going to change the system because Toby needs games for the World Cup. Pochettino is likely to go for the more tactically disciplined Erik Lamela, or even Moussa Sissoko, rather than Lucas Moura.
Easily one of the most exciting players in the Premier League, the Belgian is setting the standard for attacking players and is a joy to watch when in full flow. The interest for me is Tottenham, it's about Tottenham to win, I understand the manager but what can I do. "But other players who have not played that much - and Toby can be one of those - it is important".
They will want to win this game away from home and it will be a key win for them, as they look to reinforce their position in the top four of the Premier League.
"What can I do?" I agree that players need to play and compete. He is an experienced player. Every day he is improving. "That is enough, no?"