Saracens glad to have Ashton back after ban
The 29-year-old hasn't played competitive Rugby Union since January, having been suspended for making contact with the eye area of Ulster's Luke Marshall during a European Champions Cup pool victory over the Irish province in January.
Ashton's subsequent appeal against the ban was rejected.
He had been on course for an England recall under new head coach Eddie Jones but, with bans in rugby union applying across all matches, those hopes were dashed.
Ashton has scored 19 tries in 39 England appearances but has not played Test rugby since June 2014.
However, an international recall could come if he is selected for England's three Tests against Australia in June.
"Chris's attitude has been really good," said McCall ahead of the Bath encounter.
"He has worked hard on his game throughout the 10-week period, and I know he is itching to get out there playing once again.
"He was in great form before the suspension came along, and he is going to provide something different to our team with his X-factor.
"We are looking forward to seeing him back out on the pitch on Friday."
Ashton is set to replace rested United States international Chris Wyles.
Agence France-Presse