Google Chrome - Welcome Page

Hi Guys,
I've updated Google Chrome on our Citrix images, it has been updated to the latest v57 version. For some bizarre reason every time a user opens Google Chrome they get a page that opens by default saying "Welcome to Chrome, please sign in".

I've got Google Chrome settings in a GPO applied to the server (Computer Config) to open our intranet only. I've also installed Chrome with a Master Preferences File (Please see below for contents).

{ "homepage_is_newtabpage" : true, "browser" : { "show_home_button" : true, "check_default_browser" : false }, "bookmark_bar" : { "show_on_all_tabs" : true }, "distribution" : { "msi" : true, "system_level" : true, "verbose_logging" : true, "suppress_first_run_bubble" : true, "skip_first_run_ui" : true, "show_welcome_page" : false, "import_search_engine" : false, "import_history" : false, "create_all_shortcuts" : false,
"do_not_launch_chrome" : true, "make_chrome_default" : false }, "first_run_tabs" : [ "welcome_page", "new_tab_page" ] }

Any ideas how I stop this annoying page from coming up??