The Ayew brothers have not played for the team since September after they pulled out of a 2018 World Cup qualifier against Congo for various reasons.
The duo were not part of the Black Stars team that played the recent friendly games against Japan and Iceland but Tackie has says there is no issue and the players will be ready to play for Ghana whenever they are called.
"As far as we're concerned, we don't know of any rift or problem with the coach [Kwesi Appiah], management team or any technical team member of the Black Stars," Tackie told Goal.
"The Ayew brothers have not been called for a couple of games but if they call them, they will come like any other Ghanaian. They have never said that they are not going to play for Ghana again and have always made themselves available for future call-ups.
"If the coach thinks that he needs them and invite them for games, they will surely come and help," he added.
Fiifi further threw more light on why the Ayew brothers opted out of the World Cup qualifier against Congo.
"This is the gospel truth and this was what happened. Jordan had a stomach upset and that was a day before they were supposed to emplane to Congo so he couldn't have joined the team," he said.
"You and I know how serious 'running' stomach is, so he couldn't go. Jordan reported to the team doctor and subsequently the coach.
"In the case of Andre, he pulled a muscle a day before the game at training so he couldn't train with the team and had to step aside. The next day, he went to have a scan and sent the results to [his former side] West Ham United.
"They said the injury was not that serious but he if forces it, he can get a muscle tear, so he came to the coach the following day and explained to him the situation and later reported it to the team doctor.
"I don't see any situation [related to this], perhaps, people saw it differently and that was their opinion," he added."This is the gospel truth and this was what happened. Jordan had a stomach upset and that was a day before they were supposed to emplane to Congo so he couldn't have joined the team," he said.
Jordan and Andre Ayew have both been linked with a move from Swansea City after the club were relegated from the English Premier League.