CLEVELAND, Ohio - Reinforcements will join the Indians on Friday in Detroit for a day-night doubleheader and Class AA Akron teammates Francisco Mejia and outfielder Greg Allen are expected to be two of them.

Mejia and Allen were not on Akron's Eastern League roster as of Thursday. Big league clubs can expand their rosters to 40 players starting Friday.

ESPN reported on Thursday that Allen, a switch-hitter, will join the Indians. Allen and Mejia were in big league camp with the Indians in spring training.

Allen, a sixth round pick out of San Diego State in 2014, hit .264 (68-for-258) with 16 doubles and 24 RBI in 71 games at Akron. He scored 37 runs and stole 21 bases in 23 attempts. He missed time this season with a broken hamate bone in his right hand.

He could help the Indians in the outfield and be a threat as a pinch-runner.

Mejia is headed for the Arizona Fall League in October where he will learn to play third base. The Indians say the switch-hitting Mejia will still catch, but they want to see if he can play third as well to increase his versatility.

This year Mejia is hitting .297 (103-for-347) with 21 doubles, 14 homers and 52 RBI. He has an .855 OPS. The Indians signed Mejia as a free agent on July 2, 2012 in the Dominican Republic.

Earlier in the week manager Terry Francona said the Indians promote some players on Friday for the doubleheader at Comerica Park. He said other would be promoted on Tuesday when the minor-league seasons end.

Trade: The Indians have traded catcher Erik Katz to the Yankees for cash. Katz, who was in big league camp with the Indians this spring, hit .270 (76-for-282) with 13 homers and 37 RBI at Class AAA Columbus.