The Tigers have stepped up their pursuit of the 25-year-old ahead of the transfer deadline, with Millwall having already knocked back a bid understood to exceed the £14 million fee they received when Romain Esse joined Crystal Palace.
Azeez was one of the Championship's most productive wide players last season, scoring 11 goals and adding eight assists as Millwall reached the play-offs under Alex Neil, form that earned him a place in the division's Team of the Season and a nomination for Player of the Year.
Ipswich Town had an earlier bid worth a reported £20 million turned down by the Lions, who have since made clear they intend to hold out for a significantly larger fee, with recent reports suggesting a valuation as high as £30 million.
Millwall signed Azeez from Reading in the summer of 2024 for around £1 million, a deal that already looks shrewd business given his market value has climbed several times over. His path to that point was far from smooth: released by Watford's academy at 14, he rebuilt his career through non-league spells at Northwood, Wealdstone and Hanwell Town before earning his move back into the professional game.
A two-time Nigeria international, Azeez's pace and directness from wide areas have made him one of the Championship's most watched players over the past two windows, with Everton, Leeds United and Aston Villa among the other clubs credited with an interest at various points.
Hull City's promotion to the Premier League this summer gives manager Sergej Jakirovic a platform to offer Azeez regular top-flight football, something Millwall cannot currently match after falling short in the play-offs themselves. Jakirovic views the winger as an ideal addition to sharpen his frontline as Hull prepare for their first Premier League campaign in over a decade.
The Sun reports Millwall are standing firm for now, but with Hull determined to get a deal done before the market closes, Azeez's future looks set to be one of the more closely watched sagas of the closing weeks of the window.