Samuel Eto'o was hailed by Barcelona, Chelsea, Inter and Everton on social media after he signalled his intention to end his playing career.
Samuel Eto'o – a three-time Champions League winner among other honours – last played for Qatari outfit Qatar SC in 2018-19.
A last-16 exit at the Africa Cup of Nations has resulted in Cameroon sacking coach Clarence Seedorf and assistant Patrick Kluivert.
Alex Iwobi added to Odion Ighalo's brace as Nigeria beat holders Cameroon 3-2 in Saturday's thrilling Africa Cup of Nations last-16 tie.
Nigeria suffered a surprise defeat to Madagascar in their final group outing and now face defending champions Cameroon in the last 16.
Cameroon and Benin both progressed to the last 16 of the Africa Cup of Nations despite playing out a goalless draw in Ismailia.
Cameroon drew 0-0 with Ghana in their previous Africa Cup of Nations game and coach Clarence Seedorf wants more against Benin.
Cameroon move onto four points at the top of Group F after a woeful 0-0 draw with Ghana, who are in danger of being knocked out.
Cameroon will be looking for a second win in the defence of their AFCON title, but Ghana are upbeat over their own chances.
Yaya Banana and Stephane Bahoken scored in the second half to earn AFCON holders Cameroon a 2-0 win over Guinea-Bissau in their opener.