Spurs have been in good form this term and enter this weekend's fixtures third in the division, just two points behind pacesetters Liverpool.
The Lilywhites travelled to Bulgaria to face Ludogorets Razgrad on Thursday so changes can be expected for Sunday's meeting with Albion, who are winless in the league this term.
Here, Sports Mole looks at Tottenham could line up at The Hawthorns.
Mourinho has opted to give Erik Lamela a few weeks' rest to recover from niggling injury issues, but the Argentina international is Tottenham's only confirmed absentee.
Serge Aurier and Sergio Reguilon also sat out the Ludogorets game, though the latter is expected to slot back in at left-back for Sunday's match.
Gareth Bale, who netted Tottenham's winner the last time he faced West Brom in the Premier League, is still fighting to reach full fitness and will be among the subs.