West Ham have joined the race to sign free agent midfielder Gareth Barry. The 33-year-old has offers from Everton and Arsenal but the Upton Park club are trying to improved terms over a two-year deal. Everton have offered Barry around £50,000 a week while Arsenal's is similar but Barry knows his playing opportunities would be more limited at The Emirates. West Ham are looking to push closer to £65,000 a week and would offer regular football. Barry has been a roaring success at Goodison Park in his anchor midfield role and Roberto Martinez wants him to continue aiding the younger players in the squad to develop. However, their concern that Barry could move elsewhere is reflected in the fact they are exploring potential deals with other players. West Ham are understood to be considering bringing in former Everton chief scout Tony Henry as part of a revamp on recruitment. Henry used to work as an agent with Paul Stretford's Formation Group and helped Jorge Mendes to establish links in England. West Ham boss Sam Allardyce is also interested in Joleon Lescott and is looking at a possible deal for Martin Olsson at Norwich. He will find out later today if Mauro Zarate has signed his three-year contract after arriving to finalise his move from from Velez Sarsfield. Chelsea's Demba Ba is still of interest to West Ham although he has an offer from Besiktas.