Original sentence: It has not yet been announced who will partner Alonso when the team does return, but it is rumoured that Romain Grosjean is thought most likely to replace [[Nelson Piquet Jr}], who was sacked after he failed to meet a performance clause in his contract, and his relationship with his Renault team principal and manager Flavio Briatore deteriorated badly, blaming a lack of support in favour of the highly-rated Alonso
Edited sentence: He also blamed a lack of team support in favour of the highly-rated Alonso.It has not yet been announced who will partner Alonso when the team does return, but it is rumoured that Romain Grosjean is thought most likely to replace Nelson Piquet Jr, who was sacked after he failed to meet a performance clause in his contract, as well as his relationship with his Renault team principal and manager Flavio Briatore deteriorating badly