Okeyo signed a three year deal with reigning Kenyan Premier League champion from Tusker last December.
Okeyo joined the rest of the new signings, save for Ivorian Ephraim Guikan, in the traditional yellow and black colours of Tusker FC.
Standing between his former teammate at Tusker, Humphrey Mieno and Wesley Onguso, who signed from Sofapaka with both hands across his chest, Okeyo looked a bit shy as he avoids contact with the lenses.
Another new signing Eliu Lokuwam also turned up for the training session in unbranded Gor Mahia uniform.
The other three, Mieno, Onguso and Charles Momanyi, who signed from Kakamega Homeboyz, also donned SportPesa branded uniforms despite the gaming company announcing on Tuesday that they have cut their sponsorship deal with the club.
Of more interest is that Mieno, who was handed jersey number 30, appeared in the photo wearing club's number 28 while Momanyi had number 12 instead, of 27 that has since been assigned to him.
Gor Mahia are preparing for the Caf Champions League where they will face Equatorial Guinea side Leones Vegetarianos early February.