are busy gearing up for their return to action tonight as they travel to face for a crunch semi-final showdown.

, for the second leg of their semi-final, and they do so trailing 1-0 on aggregate in the tie.

side will need to claim a victory in Paris to have a chance of reaching the final in Munich, .

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Arsenal will have several players on the side-lines due to injury, but have been handed welcome fitness boosts for their squad.

Riccardo Calafiori returned to training on Tuesday after missing the previous nine games, .

Jurrien Timber was absent from the matchday squad for the defeat to AFC Bournemouth in the Premier League at the weekend, but was part of training on Tuesday. Arteta was asked about the defender's chances of being able to feature against PSG.

"We will decide tomorrow [Wednesday] if he [Timber] is ready to play," Arteta told reporters on Tuesday.

Arsenal will still be without Kai Havertz, Gabriel Magalhaes, Gabriel Jesus and Takehiro Tomiyasu for the clash with against PSG due to their respective injury concerns, although Jorginho has teased that he might be about to return with a welcome update on popular social media platform Instagram.

Here, football.london takes a look at the full Arsenal squad expected to be available to face Paris Saint-Germain in the Champions League semi-final second leg.

Goalkeepers: David Raya, Neto, Tommy Setford.

Defenders: Myles Lewis-Skelly, Oleksandr Zinchenko, Kieran Tierney, Jakub Kiwior, William Saliba, Ben White, Jurrien Timber, Riccardo Calafiori, Brayden Cian Clarke

Midfielders: Declan Rice, Martin Odegaard, Mikel Merino, Thomas Partey, Jorginho, Jack Henry-Francis, Jimi Gower.

Forwards: Gabriel Martinelli, Leandro Trossard, Bukayo Saka, Ethan Nwaneri, Raheem Sterling, Nathan Butler-Oyedeji, Ismeal Kabia.

Unavailable: Gabriel Magalhaes, Gabriel Jesus, Takehiro Tomiyasu, Kai Havertz.