The Gunners boss has cited the improvement of Francis Coquelin following his short spell at Charlton Athletic and believes a similar move for Gnabry could be the best for his development.
"I am tempted to give him [Gnabry] some competition because he has not played at West Brom. I am tempted to let him go somewhere to do with him what I did with Coquelin, somewhere for a month or two," Wenger explained.
Gnabry joined West Brom on a season-long loan deal in the summer, a move which many predicted would aid his development amid the opportunity to play regularly in the Premier League.
However, the German Under-21 international has barely featured for the Baggies this season, making just one substitute appearance in the league adding up to as few as 12 minutes of top-flight action.
West Brom boss Tony Pulis seemingly doesn’t feel as if the 20-year-old is ready, prompting Wenger to rethink and look back at how a number of other youngsters have fared in the past.
Coquelin is a good example of how the Championship can help prepare youngsters and Arsenal have also had success with Aaron Ramsey and Hector Bellerin enjoying spells in the second tier too.
Gnabry has the attributes to thrive in a potential promotion race and teams such as Brighton and Hove Albion, Sheffield Wednesday and Derby County would be wise to try and seek a deal.