All eyes will be on Mark Clattenburg at Stamford Bridge on Sunday as the referee takes charge of a Chelsea match for the first time since October’s extraordinary ‘racism’ row with John Obi Mikel.
Having been cleared of any wrongdoing, the official will be desperate for a controversy-free game and certainly not a repeat of the outcome of the last Chelsea-Swansea match which saw Eden Hazard “kick” a ball boy.
Ba is ineligible for European competition and is set to replace Fernando Torres, who started the Europa League semi-final first leg at Basle, while Eden Hazard is in line to face the Swans again after being sent off for kicking a ball boy during February’s Capital One Cup semi-final between the teams.
Gary Cahill was an unused substitute in the win in Switzerland and could start in defence following his six-week absence with a knee injury, with Oriol Romeu (knee) the only definite absentee.
Meanwhile, Swansea manager Michael Laudrup has a fully-fit squad to select from.
Neil Taylor could again be on the bench after returning from an eight-month absence from the matchday squad against Southampton last weekend.
Laudrup may once again look to move Michu into the centre-forward position after withdrawing Luke Moore at half-time against the Saints, while Wayne Routledge may also be in line for a recall.
Chelsea have only won 1 of their past 5 matches against Swansea in all competitions.
Home 4-11, Away 7-1, Draw 4-1.