Once widely thought of as a promising young midfielder with Manchester United, the troubled 24-year-old has struggled to find a home over the course of his career.
Following a move to West Ham from Man Utd in 2012 he was loaned to a series of clubs in England before being sold to Lazio in 2015.
Having never settled with the Italian side, the midfielder was sent on loan to Queens Park Rangers for the second half of last season.
Although the deal with Atlas is another loan, the Mexican club will have the option to make the move for Morrison permanent. Atlas currently sits 13th with seven points in the Liga MX Apertura, but more concerningly is dead last in the table used to decide which team will be relegated in May.
The Guadalajara side hopes Morrison will be able to provide a shot in the arm as it looks to avoid the fourth relegation in the team's 101-year-long history.