Might as well keep Tsimi over those options, he gets bonus and takes set pieces, can get something in one of the games.
For me I can get Haaland for Darwin by doing Tsimi to fodder which was my initial plan. But now I am tempted to just bin Darwin for Solanke (or Nkunku?) now and directly do Salah to Haaland in 20. But other than that since I already have Trips and Porro, and an Arsenal defender, I don't see many options in defense apart from Trent, and his fixtures are a bit dodgy (although he looks hot right now and can smash in a few goals/assists).
If Gordon is a big issue then I'd think of directly jumping in Rich now.