There is better news for Sokratis Papastathopoulos, Petr Cech and Ainsley Maitland-Niles who all return to full training after suffering injuries. Pierre-Emerick Aubameyang confirmed the news after uploading a photo to Twitter of some of the players on-board the plane - with Jenkinson spotted in the near right of the photo [above].
It won't be an easy task against a Sporting side that sit in fifth place in the Portuguese Primeira Liga Table, four points off leaders Benfica - even if the 18 times Portuguese champions have had a hard few months.
The Portuguese giants have two wins from two in Europe but needed two stoppage-time goals to come from behind and beat Ukrainian outfit Vorskla Poltava last time out.
The 26-year-old has endured a hard time with injuries in recent years but he's now fully fit and has been included in the squad that flew out to Portugal this afternoon ahead of Arsenal's Europa League group stage game with Sporting Lisbon on Thursday evening.
Qualification from Group E this week is a real possibility if Unai Emery's side can notch another triumph after winning ten on the bounce - including a brace of victories in continental competition with a 4-2 home victory over Vorskla Poltava and a 3-0 triumph in Azerbaijan against Qarabag in Baku. In this moment we are two teams both in first position.
'We want the balance - the balance to score a lot and also not to concede a lot of goals, ' he said. It is a very big match and very important for our confidence.
"But for me the individual goalscoring statistics for the players is very important, as it is for the supporters to be excited with many things on the pitch".
"In our mind we want to be first in this group. I think he can stay for Thursday and we are going to look because now with a lot of matches in a few days it's important the players get the good preparation".