[2] He made his senior debut with the reserve team, appearing in ten Segunda División B games in the 2008–09 season and suffering relegation.

[4] He finished the campaign with 31 matches (26 starts) and six goals, including three in a 5–3 away win against FC Barcelona B on 15 May 2011, which all but certified the Canary Islands side's permanence.

[5] In January 2012, amidst rumours of a transfer – Las Palmas inclusively had everything arranged with Granada CF but the deal eventually fell through – Viera assured he would stay with his club until the end of the season.

[7] On 6 May 2012, one month before the Las Palmas season ended, Viera signed with La Liga's Valencia CF for five years and €2.5 million.

[11] On 30 August of the following year, he was loaned to Madrid-based Rayo Vallecano in a season-long move without the option of making the deal permanent afterwards.

[14] He appeared in only seven competitive matches during his spell in Belgium, scoring in a 2–1 group stage defeat at Feyenoord in the UEFA Europa League.

[35] On 9 October 2017, as the full side had already qualified as group champions for the 2018 FIFA World Cup, manager Julen Lopetegui handed him his debut, and he played the entire 1–0 away win over Israel.