Timely Boost Before Atletico Madrid ClashThere is a familiar tension around nights like this, where preparation meets opportunity and squad depth quietly shapes destiny.

Martin Odegaard and Kai Havertz are both set to return to the Arsenal squad against Atletico Madrid on Tuesday night.The Gunners host the Spanish side in the second leg of the Champions League semi-final tie after a 1-1 draw in Madrid a week ago.

All you need to know ahead of Tuesday's Champions League semifinal second leg between Arsenal and Atlético Madrid.

Arsenal’s chances of welcoming any injured players back against Atletico Madrid have taken a hit, with none of the four involved in training on Monday.Photo by Richard Heathcote/Getty ImagesIf

Arsenal have a number of injuries to contend with as the Gunners chase trophies on the remaining two fronts. A spot in the Champions League final is on the line next.

Losing Havertz in particular proved to be a heavy blow. The hosts at least looked able to make the ball stick in the opposition half before their forward went down in pain. With his exit, Arsenal lost their outball, the roving forward whose movement was creating channels for wide runners to dart into central spaces.

Arsenal host Atletico Madrid for the second leg of Champions League semi-final with the tie level at 1-1.

There are at least five injury doubts for Arteta to fret over ahead of Wednesday’s showdown in Spain.

Arsenal captain Martin Odegaard and forward Kai Havertz were absent from open training ahead of tonight’s Champions League semi-final second leg against Atletico ​Madrid at the Emirates Stadium, but manager Mikel Arteta said both ‌players are available for selection,