Gazzetta.it says the Austrian, who has been capped 102 times by his country, signed for the Chinese Super League club following spells in the Premier League with Stoke and West Ham - where he netted 22 times in 65 games.
But now he could be set for a sensational return to England as Man Utd are linked with a move for him.
The Red Devils are looking for a striker and Arnautovic is "fascinated" by another spell in the Prem.
As a result, he could well be the man to replace Cristiano Ronaldo if the Portuguese superstar departs this summer.
Ronaldo has made it clear his desire to leave Old Trafford in search of Champions League football.