Liverpool midfielder Arthur Melo, who is currently on a season-long loan from Juventus, is set to undergo surgery for a thigh injury, ruling him out of action for up to three to four months.Arthur, 26, joined the Reds from Juventus on a temporary deal on the deadline day of the summer transfer window to rejuvenate his stagnated career. The Merseyside outfit paid a loan fee in the region of £4 million for the Brazilian with an option to buy for £32 million next summer.Arthur Melo@arthurhromeloVery proud to join this incredible club. I'm ready! @LFC1433128071Very proud to join this incredible club. I'm ready! @LFC https://t.co/qGUKc1tyf8Known for his passing and dribbling, Arthur arrived at Liverpool with a severe lack of match sharpness after being frozen out at Juventus. He embarked on a fitness regime at his new club and featured in only 13 minutes of action as a second-half substitute in his team's 4-1 UEFA Champions League defeat at Napoli on 7 September.According to The Athletic, Arthur is set to be sidelined for the rest of the calendar year after aggravating a muscular injury in training on Monday. After further assessment, the club's medical staff has decided that surgery is the best course of action for the injury-prone midfielder.Earlier last month, the former Barcelona man was put on an intensive conditioning program to regain his fitness. He also spent the recent international break training with the Under-21s and started two matches for them in Premier League 2 and the EFL Trophy.The Reds opted to sign Arthur earlier this summer to address their injury-stricken midfield. However, he is set to join Naby Keita, Alex Oxlade-Chamberlain and Curtis Jones on their road to recovery. Thiago Alcantara and Jordan Henderson were also out injured earlier.Liverpool are currently 10th in the 2022-23 Premier League standings with 10 points from seven games. The club are next scheduled to lock horns with Arsenal at the Emirates Stadium on Sunday (9 October).Liverpool FC@LFCA ruthless Reds display at the Emirates in 2021 @SCJohnson | #ARSLIV5104354A ruthless Reds display at the Emirates in 2021 ⏪🔥@SCJohnson | #ARSLIV https://t.co/MbYMKYv2fULiverpool's Fabinho warns Arsenal with bold claim ahead of Premier League clashSpeaking on the club's website, Liverpool midfielder Fabinho shared his thoughts about the Reds' upcoming trip to north London:"The Emirates is a nice place to play, and Arsenal, of course, are in a really good moment right now, playing really well, winning their games, top of the league. It's a good opportunity for us as well to show that we are Liverpool, we are still one of the best teams in this league."He continued:"So yes, it's a good opportunity for us to get the three points and to close the gap on these teams as well. This is a winning team. The last season was really good, we played all the competitions until the end and we won two. This shows what this team is capable of doing."