Algeria require a simply attract Seychelles on Thursday while Cameroon require a win in Mauritania the following day to meet all requirements for Gabon.
Tunisia will lose the shot of winning Group An if Djibouti beat them on Friday and Liberia beat Togo on Sunday.
The other amusement on Friday is Libya playing Morocco, who have officially fit the bill for the finals in Gabon.
Twenty more matches throughout the weekend finish the penultimate round of qualifiers.
The gathering victors and the best two runners-up will fit the bill for the finals.
Before the up and coming qualifiers, Benin are the greatest second-put side with eight focuses, while Tunisia, Mauritania, Uganda, Central African Republic all have seven.
However Benin are at present serving a worldwide restriction from football forced by Fifa and if that authorize is not lifted before their match against Equatorial Guinea they will be disposed of from the qualifiers.
"No choice made [on whether Benin's diversion has been cancelled]," the Confederation of African Football told BBC Sport.
"In Mexico the Fifa congress gave the ability to its Council to readmit Benin once the conditions are satisfied - if by the date of their diversion they are still banned they will be sensibly wiped out."
Since their last Group J qualifiers against Ethiopia in March, Algeria have gone separate ways with French mentor Christian Gourcuff.
A 7-1 win and 3-3 attract those matches against Ethiopia leaves the Desert Foxes five focuses clear at the highest point of their gathering and with a superior straight on record over the Walya Antelopes.
He has been supplanted with two interval mentors Yazid Mansouri and Nabil Neghiz, who are careful about playing on a manufactured contribute Seychelles.
The pair will likewise know that Seychelles are unbeaten at home in the qualifiers in this way, after a draw with Ethiopia and win over Lesotho.
Algeria will likewise be without a few key players, with Sporting Lisbon's Islam Slimani suspended while English Premier League champion Riyad Mahrez and Porto's Yacine Brahimi are both harmed.
Rather they will look to an assaulting trio of Lyon's Rachid Ghezzal, Sofiane Feghouli of Valencia and El Arabi Soudani, who has scored four objectives in the battle in this way.
Belgium's Footballer of the Year Sofiane Hanni, who plays for Anderlecht, is set to make his presentation for Algeria having played for France at youth level.
A misfortune for Seychelles will mean they can't win the gathering and abandon them trusting a few different results go their direction this weekend to have any possibility of a greatest second-set spot.
On Friday, Cameroon could likewise join Morocco and hosts Gabon at the 2017 Nations Cup in the event that they can win in Mauritania.
The Indomitable Lions are as of now one point in front of their rivals after the initial four matches of the crusade.
Cameroon mentor Hugo Broos left skipper Stephane Mbia out of his squad for the qualifier and Tuesday's benevolent 3-2 misfortune to France.
Forward Benjamin Moukandjo and Nicolas Nkoulou both missed the France amusement with wounds as well.
Tunisia likewise play on Friday knowing they could lose the possibility of winning Group An on the off chance that they lose in Djibouti and afterward Liberia secure a win over Togo on Sunday.
In that situation Liberia would procure themselves a placey at the Nations Cup finals surprisingly since 2002.
Djibouti have as of now been dispensed with and have yet to win a solitary point from their opening four matches, scoring just once and surrendering 16 objectives.
Friday's other match sees Morocco tackle Libya in Tunisia after the amusement was moved because of the progressing issues in Libya.
Morocco have as of now secured their place in the finals after a 1-0 win away and a 2-0 triumph at home over Cape Verde in March kept up their 100 for every penny winning record in the qualifiers.
Libya in the mean time sensibly require a win to keep alive any trust they have of getting second spot in Group F.
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