I am employed as a salaried manager at a large international retailer. I was hired Oct 3, 2014. I began experiencing

Customer: Hello, I am employed as a salaried manager at a large international retailer. I was hired Oct 3, 2014. I began experiencing symptoms of anxiety and depression around early 2017 due to burnout from personal and work related stress, exasperated by toxic work environment and superior who triggered personal trauma. My performance was affected and I was disciplined. I went to ER in distress and was written off work by a psychiatrist for an indefinite amount of time. I started on STD on June 14th, 2018. I was approved for LTD with Manulife from October 2018 until the present time. After 2 years on LTD, I was expected to return to work either by returning to my previous employer or pursuing work elsewhere. I chose to return to my previous employer to my previous role which I have certification in and have experience of 15 years. Discussion of return has been in the works since September 2020. On March 1st, 2021, I was informed that Manulife provided my employer with a list of accommodations by email and was expecting a response within 2 weeks. On March 11th, 2021, I received correspondence from Manulife to expect an email from my employer to discuss "next steps". I confirmed with Manulife that my employer had not yet made a decision about accepting my request for accommodation and required more information. I had a video call with my employer on March 17th 2021 who was requesting more information regarding my work environment. I requested not to revisit the incident out of fear of retaliation and stigma in the workplace. I was told that my position no longer existed due to "max capacity", was told that someone was returning from mat leave. I am aware that the return is some time in April 2021. As such, I was given two options for employment: one is a salaried position that is in the same payscale, but would be outside of my career field that would require additional training beyond the 8 week gradual return to work, expectation to meet standards of the job after the 8 week rehab period or termination based on performance rating prior to the STD/LTD that was a symptom of my disability, a further commute. The second "offer" was that I apply for a 1 year contract position related to my field that was neither guaranteed and would require me to accept a demotion. Neither options are ideal, considering one is setting me up for failure and additional stress, and the other is not a guaranteed position forcing me to accept a demotion. I feel that I am at the point where I have to choose between quitting or choosing to be terminated from my employment for cause.My question is, do I have a case of constructive dismissal or discrimination due to my disability?