Escobar, 23, was acquired by the Twins along with left-hander Pedro Hernandez from the White Sox on July 28 for lefty Francisco Liriano.
The versatile Escobar played in 36 games with the White Sox this season, batting .207 with two stolen bases and a triple. He has spent his entire Twins tenure at Triple-A Rochester, where he hit .224 with three triples in 36 games.
Twins manager Ron Gardenhire said he's excited for his first extended look at Escobar, who can play third base, shortstop and second.
"We haven't seen him and this is our opportunity to get a good look at him and see what he can do around here," Gardenhire said. "It's exciting to get him up here. We'll use him in all kinds of roles -- short, third -- and just look at him all around, get him some swings and let him have some fun and get to know him a bit."
General manager Terry Ryan said Escobar will get a long look this month as the club deciphers where he fits in its plans for next season.
While the Twins will be getting their first look at Escobar, the 28-year-old Perdomo joins Minnesota for the second time. Perdomo, who signed as a free agent last November, allowed one earned run in six innings spanning five games from July 28-Aug. 14.
"He's got a rubber arm, he certainly gives us a lot of protection in that bullpen," Ryan said. "We haven't seen him a bunch up here, so we want to get a look at him as well."
Escobar and Perdomo join outfielder Matt Carson and right-handers P.J. Walters and Esmerling Vasquez as recent additions to the club. Ryan said those players, as well as the anticipated return of Denard Span (right shoulder), likely will be all the roster moves for the Twins.