Hayden, who can play as a central defender or as defensive midfielder, has a contract with Arsenal until June 2017, according to Transfermarkt.co.uk.
The 21-year-old played for Hull on loan from the Gunners during the 2015-16 campaign.
The youngster scored one goal and created 13 chances in 17 Championship appearances for the Tigers last season.
The England Under-20 international had a pass accuracy of 88% and a shot accuracy of 40%, and won eight headers, 13 dribbles and 13 tackles.
Hayden had a decent spell at Hull, and the next logical step in his career would be to play in the Premier League.
The Tigers got promoted from the Championship at the end of last season, and given their (reported) interest in Hayden, perhaps QPR would find it tough to convince the youngster to snub a Premier League offer.