If Teoscar was cheaper, maybe. If I were the other team, I would not give anything besides lottery tickets. 15M is a lot of money to take on for a player projected for 2 WAR in 2023.
For Gurriel, other teams will not care why he is sucking. If you're getting a CF, Gurriel will be the one sitting on the bench anyways. Also, given his base running and defense, you can find much cheaper replacements.
The problem with trading Jansen is that you will not get his true full value back. He has been injured (some due to bad luck HBP), and the Jays org has been so f***ing stupid in using him when healthy by playing him every other game, including not using him as DH except a handful of times despite being the best offensive player. They also batted him 8th reducing the amount of ABs he got. He is likely to produce a 5+ WAR season on another team that knows how to utilize him. The Blue Jays would be better served by trading Kirk for a CF with similar value and years of control as Kirk's value is unlikely to increase beyond what it currently is. Kirk might be able to fetch something like Varsho or Thomas from Arizona. I can't think of a reasonable Jansen trade that improves the team as much.