Chelsea teenager Nathan Ake joined the first team for training ahead of their crucial Champions League match away to PSG.
The versatile 19-year-old featured in the latter stages of the Europa League last season under Rafa Benitez, but has yet to make a first team appearance under Jose Mourinho.
The Dutch youth international can play in both central defence and central midfield, compared to Ruud Gullit in not only style but appearance.
Chelsea go into the quarter-final match on the back of an away loss to Crystal Palace, and manager Jose Mourinho will be determined for his squad to produce a response.
The inclusion of Ake in the squad will keep first team stars on their toes and provide him with invaluable experience, even just to savour the occasion sitting and watching on from the stands.