Tottenham take on fierce rivals Arsenal in a highly anticipated pre-season showdown overseas, and we have highlighted five key players to keep an eye on as Thomas Frank continues shaping his squad ahead of the new campaign.Tottenham Hotspur are slowly coming to the end of their pre-season preparations, with the Premier League season now just a couple of weeks away from kick-off.Next up for Tottenham in their preparations for the upcoming season is a clash against fierce rivals Arsenal in Hong Kong, China – a match that marks the first ever north London derby to be staged outside of England.New manager Thomas Frank will be hoping to lay down an early marker with a win over one of Spurs’ biggest rivals on Thursday, even if the encounter is only a pre-season friendly.For Tottenham fans, there will certainly be a few things worth keeping an eye on during the game, and we have highlighted five players to watch.Photo by SpursWebJames Maddison fitness watch for Tottenham vs ArsenalJames Maddison has been out for several months, having picked up an injury at the back end of last season – one that ruled him out of both the Europa League semi-final and final.Maddison has been working his way back to full fitness and even returned to the training pitch last week ahead of Tottenham’s pre-season trip to Asia.Interestingly, Maddison was among the players to make the journey to the Far East, which suggests a return for the 28-year-old is close. It could very well come against Arsenal on Thursday – perhaps in the form of a short cameo off the bench.Spurs will be waiting on Dominic Solanke’s returnTottenham fans are no strangers to injury issues, and just last week, Thomas Frank had to navigate what can only be described as a minor crisis within his squad.Dominic Solanke was one of three Spurs players absent from the recent double-header of friendlies, with Destiny Udogie and Rodrigo Bentancur also sidelined.The England international did make the trip to Asia, but it remains unclear whether he will recover in time for the clash against Arsenal. Tottenham have turned to Mathys Tel and Richarlison to lead the line in Solanke’s absence – a situation that could persist if he is not fit to start.Jamie Donley could feature at left-back again for SpursTottenham’s left-back position is fast becoming a real problem area in Frank’s squad, and we have spoken previously about the urgency to address it before the season begins.At present, Ben Davies is the only recognised senior left-back available, following Destiny Udogie’s knee injury, which ruled him out of the match against Luton Town.Djed Spence could be an option on the left, although Frank has typically deployed him on the right so far. Jamie Donley did get minutes at left-back during the Luton Town match, and with the 20-year-old among five academy prospects on the Asia tour, he could continue in that role during pre-season.Mohammed Kudus set for first north London derby in Spurs shirtTottenham’s new signing, Mohammed Kudus, has been one of the standouts in pre-season so far.The former West Ham United midfielder made a strong impression during a lively cameo against Reading, where he provided an assist and was involved in the build-up to Will Lankshear’s goal from a corner.Kudus is now poised to feature in his first north London derby on Thursday – albeit in a pre-season setting. He will be no stranger to the rivalry, having played in several heated encounters while at West Ham.Could this be Heung-min Son’s final north London derby?Heung-min Son was always going to be included in Tottenham’s pre-season tour of Asia.The 33-year-old remains an iconic figure in the region, and given Tottenham’s commercial agreements with investors, it is all but certain Son will feature heavily in matches against Arsenal and Newcastle United.However, this may also be something of a farewell tour, with Son being strongly linked with a move to LA FC. If a deal is struck, Thursday’s derby could mark the South Korean’s final appearance in this historic fixture. His numbers against Arsenal are impressive – nine goals and four assists in 22 appearances.READ MORE: Thomas Frank hints at what kind of forward Tottenham may sign this summerThe post Five Tottenham players to watch vs Arsenal, including one North London Derby first and one potential last appeared first on Spurs Web.