Christian Benteke could return for Liverpool against Villarreal after travelling with the rest of the first-team squad to Spain, according to Sky sources. Benteke returned to full training earlier this week after a month out with a knee ligament injury sustained on international duty with Belgium. The 25-year-old, who last featured for Liverpool in the 3-2 defeat at Southampton on March 20, could be named among the substitutes for the Europa League semi-final first leg at the Estadio El Madrigal. Benteke has struggled to produce the same prolific goalscoring form he showed during his time with Aston Villa Bentekes return to fitness will be a welcome boost for Liverpool manager Jurgen Klopp, who lost Divock Origi to a serious injury during last weeks Merseyside derby. Sakho accepts drug test result Liverpool defender Mamadou Sakho will not contest the result of his positive drug test The Belgium forward has struggled to score on a consistent basis for Liverpool since joining the club from Aston Villa for £32.5m last summer. Benteke has scored only eight times this season and last month accused Klopp of ignoring him, leading to speculation that he could leave Anfield in the summer. Also See: Sakho accepts drug test result Reds favourites against Villarreal Hillsborough: Football reacts Ayre praises dignity of families Wholesale Nike Zoom . Its an influence in football and a big part of the game. Clearance Nike Zoom Shoes . Louis. To which I would say two things: 1. Where there is smoke, there is or perhaps has been a little fire. Or, in other words, the two teams would appear to have at least spoken. And spoken is defined as one calling the other to inquire, no more, no less. http://www.nikezoomcheap.com/ . The 31-year-old Spain midfielder hasnt played since Madrid lost in the Copa del Rey final to Atletico Madrid in May due to back and foot injuries. Wholesale Real Nike Zoom . Spiller left Week 3s 27-20 loss to the New York Jets with a thigh injury, but fully practiced with the team all week and expects to be ready to go on Sunday. Cheap Nike Zoom Training Shoes . Perez, 35, posted a 1-2 record with a 3.69 earned-run average in 19 relief appearances last season. His season ended Aug. 9 due to a torn ligament in his left elbow. Perez joins infielder Andy LaRoche and catcher Mike Nickeas with minor-league agreements for 2014 that include invitations to attend spring training. The Boston Celtics will sign free-agent swingman Gerald Green, and have agreed to a deal with restricted free agent?Tyler Zeller?sources confirmed to ESPN.The news of Greens signing was first reported by the Sporting News, while Zellers news was first reported by the Boston Herald.Green is expected to ink a one-year deal worth $1.4 million with the team that originally selected him with the No. 18 pick in the 2005 draft. He spent two seasons with Boston before being dealt to the Minnesota Timberwolves as part of the Kevin Garnett deal in 2007.Zeller has agreed to a two-year, $16 million deal with the second year being a team option, a source told ESPNs Ramona Shelburne.By signing Zeller and Green, the Celtics appear content to head into the season with the roster they have constructed. Boston had been maintaining its salary cap flexibility while examining other trade and free agent optionsThe 30-year-old Green averaged 8.9 points per game in 69 appearances for the Heat last season, including 14 games as a starter. An erratic season for Green saw the nine-year veteran go from being a high-scoring sixth man for the Heat in the first half of the season to barely playing over long stretches entering the playoffs. Despite those inconsistencies with his role, Green repeatedly said he hoped to remain in Miami long term.Stability, hhowever, has evaded Green for most of an NBA career in which hes played for the Celtics, Houston Rockets, Timberwolves, Dallas Mavericks, Brooklyn Nets, Indiana Pacers and Phoenix Suns.ddddddddddddHe?signed a one-year deal for the veterans minimum with the Heat last summer.Green has shot 36.1 percent beyond the 3-point arc for his career. During the 2013-14 season with Phoenix, Green shot 40 percent while hoisting a career-high 510 attempts.The 26-year-old Zeller, the 17th overall pick in the 2012 draft, appeared in only 60 games for Boston this season -- a year after starting 59. Zeller was the odd man out in the Celtics log-jammed frontcourt and logged 25 DNPs, including three in the postseason.The Celtics acquired the 7-foot Zeller -- and the first-round pick that would help land Isaiah Thomas -- as part of a three-way trade in July 2014 that helped the Cleveland Cavaliers clear the necessary cap space to bring back LeBron James.Zeller averaged 6.1 points and 3 rebounds over 11.8 minutes per game last season. He earned $2.6 million before reaching restricted free agency. The Celtics extended a $3.7 million qualifying offer in June.Information from ESPNs Michael Wallace was used in this report. ' ' '