The former starting quarterback is scheduled to begin classes when the semester starts on Monday and will return to the team after being arrested for a DUI in early October, disenrolling from the university and leaving the team after being suspended indefinitely.
Pachall spent time at a drug and alcohol treatment facility after leaving the team -- a decision Patterson said was ultimately Pachall's -- and the coach made it clear the door for Pachall to return was open if he met all the requirements and completed the program.
"He finished all of his in-patient work and has been in out-patient work up until Friday," Patterson told the paper. "He did everything we wanted him to do."
The team is scheduled to meet on Sunday, the paper reported, and Pachall would be joining them. Patterson noted that he didn't know if Pachall would be the team's starting quarterback, but that he hadn't thrown a football or lifted weights in "several months."
"He met with Campus Life and one of the reasons I feel so good about this is because they feel so good about it. They feel very comfortable with it," Patterson told the paper.
Pachall completed 66 percent of his passes for 948 yards, 10 touchdowns and an interception in four games last season before his arrest. He threw for 2,921 yards, 25 touchdowns and seven interceptions in 2011 as TCU's starting quarterback.
He was replaced by Trevone Boykin after leaving the team. Boykin finished 2012 with 15 touchdowns and 10 interceptions along with 2,054 passing yards, completing 57 percent of his passes. TCU also went 3-6 with Boykin as the starting quarterback.