Henrikh Mkhitaryan is unlikely to travel to Baku, the club's CEO has said. Alexandre Simoes/Borussia Dortmund/Getty Images

Henrikh Mkhitaryan is set to miss Borussia Dortmund's Europa League trip to Azerbaijan because of security concerns, the club have said.

Dortmund face Azerbaijani club Gabala in the Europa League on Thursday, but are likely to leave the Armenian midfielder in Germany because of an ongoing conflict over the Nagorno-Karabakh region between Armenia and Azerbaijan.

The region, along with some adjacent territory, has been under the control of Armenian soldiers and local ethnic Armenian forces since a 1994 ceasefire ended a six-year war.

Violence has nevertheless broken out sporadically since.

"Mkhitaryan will most likely not be on board our flight to Baku," Dortmund CEO Hans-Joachim Watzke told German tabloid Bild earlier this week.

However, Borussia Dortmund have not yet made a final decision on whether they will exclude the in-form midfielder from the trip, a club spokesperson told ESPN FC.

The five-time Armenian footballer of the year has visited the disputed region several times and it remains unclear whether he will be granted a visa to enter Azerbaijan.