William Saliba's return to first-team training is a significant boost for Arsenal as they prepare for their upcoming Champions League match against Slavia Prague. This development presents manager Mikel Arteta with a challenging decision regarding his defensive lineup.

Arsenal defender William Saliba has returned to first-team training after an extended absence due to a back injury. His recovery comes just in time for the Gunners' Champions League encounter with Slavia Prague, marking a crucial moment for the team's defensive strategy.

Saliba, who played a pivotal role in Arsenal's title-winning campaign last season, had been sidelined since the World Cup semi-final. His absence allowed summer signing Ezri Konsa to step in, forming a strong partnership with Gabriel Magalhaes. This duo has helped Arsenal maintain the league's tightest defense, conceding only five goals in nine matches.

Saliba has been training individually for several weeks before rejoining the full squad.

Konsa has impressed in Saliba's absence, starting seven out of nine Premier League games this season.

Arsenal's defense has remained solid, thanks to the effective partnership between Konsa and Gabriel.

Saliba was named in the PFA team of the year for the fourth consecutive time last season.

Manager Mikel Arteta faces a selection dilemma as he considers how to integrate Saliba back into the lineup.

As Arsenal gears up for a busy festive schedule, the return of Saliba adds depth to their defensive options. Arteta's next challenge will be determining the best way to utilize both Saliba and Konsa in the lineup going forward.