Pep Guardiola improved Douglas Luiz by "70 per cent" despite the Brazilian working with the coach for just a few months across his time at Manchester City.
Douglas Luiz joined City from Vasco da Gama as a teenager in 2017 but was swiftly sent out on loan to Girona for the 2017-18 season, before returning to the Spanish side for the following campaign.
Those temporary moves came either side of a full pre-season Douglas Luiz spent with Guardiola and the City senior squad, while he also teamed up with them briefly ahead of his permanent move to Aston Villa last July.