Chelsea are planning a raid for Newcastle duo Cheick Tiote and Tim Krul as part of a £90m summer hitlist.
Roman Abramovich is also ready to make a £34m bid for Brazilian striker Hulk and a £30m swoop for Atletico Madrid striker Radamel Falcao.
Tiote, at 25, has emerged as one of the most dynamic central midfielders in the Premier League.
Chelsea coould face competition from Liverpool and Manchester United for the signature of the the Ivory Coast midfielder, who joined Newcastle from FC Twente for just £3.5m in the summer of 2010.
Dutch keeper Krul, aged 23, has caught the eye during his first full season at Newcastle.
Krul moved to Tyneside in 2005 from ADO Den Haag when Graeme Souness was in charge, with a tribunal setting his transfer fee at £200,000.
His elevation to first choice saw him rewarded with a new five-year contract at the start of this month.
Chelsea have been encouraged to make a fresh move for Hulk after the striker – who has a €99m escape clause in his contract – indicated he wanted to leave Porto.
Hulk scored 36 goals in 53 matches last season under Andre Villas-Boas to help Porto to win the league, Portuguese Cup and Europa League and formed a formidable attack with Falcao before the Columbian international was sold.
Chelsea representatives have also been chasing Falcao, who left Porto last summer.
Falcao scored 33 times in 36 matches for Porto, including 17 in 14 Europa League games, a new record.
The 26-year-old was sold to Atletico — who now have financial problems — having been considered by several clubs last summer, including Chelsea, who then decided against making a bid.