The pair was on trial from TP Mazembe in the DR Congo.
Both Semakweri and Nyandoro were hoping to get contracts with Celtic, after their trial period was extended for another week, but ultimately failed to do enough to win the hearts of the technical team.
“Our search for quality players still continues as we are expecting two Nigerian players and one from Ghana to arrive today,” coach Clinton Larsen told KickOff.com.
Meanwhile Cuthbert Malajila is set to make a dramatic come back to the club that gave him fame this afternoon when DeMbare take on Black Mambas at Rufaro.
Dynamos diehard fans will be hoping that the sure-footed striker is going to change the fortunes of the club as they continue to lose grip on the championship.
Malajila is set to bolster their attack, which has been letting them down for a long time this season.
Speaking to Standardsport on Friday, Dynamos chairman Kenny Mubaiwa said everything was in place for Malajila to resume duty, but they were only waiting for a clearance letter from his owners for him to start playing.
DeMbare will be hoping to collect three points to start moving up the ladder.
The Glamour Boys were forced to eat humble pie by Blue Ribbon when they beat them 1-0 at the same venue in a mid-week encounter completing a double over the fancied side as they beat them 2-1 in the reverse fixture.
But Dynamos head coach Lloyd Mutasa has to remind his players the formula for winning or else they will soon resemble city rivals CAPS United who have become the whipping boys of the league.
Gunners hosts Shooting Stars at Lafarge in Mabvuku while CAPS United travels to Masvingo for a date against Masvingo United.
High-riding Blue Ribbon are set to maintain their winning form when they meet Monomotapa who are also playing well at Gwanzura.
Hwange will have the toughest assignment of the day as they take on defending champions Motor Action at the Colliery. The coal miners have another boost as their former captain Obert Moyo, who has been plying his trade in South African First Division, is back at the club.
Moyo played his first match for Hwange in Zvishavane when they lost to FC Platinum.
Action will continue on Tuesday with Chicken Inn travelling to the capital for a date against Kiglon.
Shabanie Mine, who have signed former Orlando Pirates defender Zvenyika Makonese, will take on Zimbabwe Saints at Maglas.