Arsenal's Jack Wilshere, right, is tackled by Bournemouth's Steve Cook during the English Premier League soccer match against Bournemouth at the Vitality Stadium, Bournemouth, England, Sunday Jan. 14, 2018.
Wilson made way for Benik Afobe with time running out as Bournemouth held on for three vital points to lift them to 13th and further away from the danger zone.
The Gunners got off to a positive and hit the upright in the opening 10 minutes through Ainsley Maitland-Niles' powerful strike.
Alexis Sanchez has been linked with a move away from Arsenal this month
Mesut Ozil was also missing because of injury and Arsenal's lineup looked a shadow of the past teams under Wenger.
The goal was Ibe's first for the club in 18 months.
The Gunners on the other hand were left effectively condemned in the sixth position, five points behind fifth placed Tottenham Hotspurs who secured a 4-0 emphatic win over Everton on Saturday.