A 27-year-old Swedish forward, the 5-11 Armenteros comes to Portland on loan from Italy's Benevento (with an option to buy). In 2016-17 with Heracles Almelo in Netherlands, Armenteros scored 22 goals in 32 appearances. Armenteros gives the Timbers a real striker option besides Adi for the first time since Maxi Urruti helped Portland win the MLS Cup in 2015.
The 24-year-old defender is the third player to move from Costa Rican side Saprissa in the past two seasons, joining David Guzman and Roy Miller. A 6-2 center back, Cascante figures to be the first replacement for projected starters Liam Ridgewell and Larrys Mabiala.
A 27-year-old midfielder who has made 59 appearances with El Salvador's national team, Flores played four seasons under coach Giovanni Savarese in the NASL, contributing 10 goals and 18 assists in 83 games while the New York Cosmos won two championships. He brings good technical ability as a depth player in midfield.
A 23-year-old defender, the 6-1 Jadama played last season with Tulsa in the United Soccer League. A native of Gambia, Jadama has played professionally in Chile. He will provide depth and versatility to the back line and as a young player could spend time with T2 to build experience.
A 22-year forward, the Vancouver, Washington, native was signed as a homegrown player after helping Stanford win three consecutive national championships. He set the Pac-12 career record for goals (37). Langsdorf played in the Timbers youth academy prior to college, was the club's Academy Player of the Year in 2013, and played 17 times for the Timbers' under-23 team during his college career. He figures to play for T2 this season.
A 19-year-old defensive midfielder, he could turn out to be one of the more significant recent acquisitions for the Timbers. The 6-foot Paredes saw limited playing time in 2017 after signing with Mexico's Club America, but did get his first action with Paraguay. With David Guzman likely to be part of Costa Rica's team at the World Cup, Paredes could get meaningful minutes this season.
A 23-year-old Peruvian winger, Polo was acquired on loan with a purchase option from Mexican club Monarcas Morelia. He scored two goals in 25 appearances with Morelia. In 15 appearances with Peru's national team, Polo has one goal. Known for his quickness and technical skills, in preseason the 5-8 attacker lined up on both wings and is one option to replace Darlington Nagbe in the starting lineup.
A 22-year-old central defender and defensive midfielder, the New Zealand national teamer signed with Portland last season but did not appear in an MLS match. He did play well in 11 starts for T2, scoring three goals. He has had a solid preseason at center back and improves the depth along the back line.
A 21-year-old central midfielder, Williamson is a rookie who was acquired via trade with D.C. United, who signed him as a homegrown player after three college seasons at Maryland. He had one goal and two assists in 12 appearances with the U.S. under-20 national team and played in four of the team's five games at the 2017 under-20 World Cup. The 5-9 midfielder likely spends his rookie season with T2.