Create a direct link to the task "research supplier"

We are trying to create an hyperlink which redirect the user to the task "research supplier" inside the negotiation module.

The URL retrieved from the page "research supplier" cannot be used for this purpose since it doesn't redirect the task research supplier but only to the homepage.

Moreover we couldn't find a solution using the deep links already available in the system.

Is there a way to create an hyperlink or a deeplink with can redirect the user to the task "research supplier".

Thank you