The young Spanish star spent last season on loan at the Barclay's Premier League club and showed glimpses of his talent.
He played 17 times for Bolton, including four starts, and scored against Wigan in a 1-1 draw.
Target: Rodrigo Moreno could return to Bolton after a successful loan spell
Benfica want ?6m for Rodrigo who signed from Real Madrid last summer but has yet to feature for the Portuguese giants.
They are holding out for more cash but Coyle wants a straight answer.
Talent spotter: Owen Coyle has his sights set on a number of transfer targets
Rodrigo is due to play for Spain in the under-20 World Cup in August and Bolton want the deal agreed before then.
Coyle also hopes to clinch the capture of Swansea midfielder Darren Pratley? and is waiting on word from Barcelona about his ambitious ?5m offer for Spanish under-21 ace Thiago Alcantara.
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Source: Daily Mail
Source: Daily Mail