contract/contract_sale/views/account_analytic_account_view.xml

<?xml version="1.0" encoding="utf-8"?>
<odoo>

    <record id="account_analytic_account_recurring_form_form"
            model="ir.ui.view">
        <field name="name">Contract form (in contract_sale)</field>
        <field name="model">account.analytic.account</field>
        <field name="inherit_id"
               ref="contract.account_analytic_account_recurring_form_form"/>
        <field name="arch" type="xml">

            <xpath expr="//field[@name='discount']" position="attributes">
                <attribute name="groups">sale.group_discount_per_so_line
                </attribute>
            </xpath>

        </field>
    </record>

    <menuitem
        id="menu_contract_sale" name="Contracts"
        parent="sale.sale_order_menu"
        action="contract.action_account_analytic_sale_overdue_all"
        sequence="2"
        groups="sales_team.group_sale_salesman"
    />

</odoo>